Comcast can't fix my Internet problem

[Lt923]

Hello,

I've recently been talking with comcast for a few weeks now about my internet problems. First they said it was my Modem and that I had to get it changed or contact manufacturer about the problem and that's what I did. I told my modem's manufacturer [Motorola] about the issue and what comcast had said. They then proceed to tell me about the log erros in my modem and tell me it has to do with my coax cables. A week later xfinity comes to my house, changes a coax cable and it results the coax cable was badly damaged and so they replaced it. After the technician left I tried my internet and the problem still persist, they didn't fix anything. My speeds are still dropping every few minutes, is becoming a big issue now. Im paying for 200mbps down and 10mbps up, I think is enough with this bad service. 

Modem: Motorola MB8600

Router: NETGEAR R6700v3

Downstream Bonded Channels

Channel Lock Status Modulation Channel ID Freq. (MHz) Pwr (dBmV) SNR (dB) Corrected Uncorrected    1 Locked QAM256 5 363.0 8.9 44.2 0 0    2 Locked QAM256 1 339.0 8.8 44.3 0 0    3 Locked QAM256 2 345.0 8.8 44.3 0 0    4 Locked QAM256 3 351.0 8.9 44.4 0 0    5 Locked QAM256 4 357.0 8.8 44.2 0 0    6 Locked QAM256 6 369.0 8.7 43.9 0 0    7 Locked QAM256 7 375.0 8.6 44.2 0 0    8 Locked QAM256 8 381.0 8.8 44.1 0 0    9 Locked QAM256 9 387.0 8.5 44.2 0 0    10 Locked QAM256 10 393.0 8.7 44.4 0 0    11 Locked QAM256 11 399.0 8.5 43.8 0 0    12 Locked QAM256 12 405.0 8.3 44.1 0 0    13 Locked QAM256 13 411.0 8.4 44.1 0 0    14 Locked QAM256 14 417.0 8.1 43.9 0 0    15 Locked QAM256 15 423.0 8.1 43.9 0 0    16 Locked QAM256 16 429.0 8.3 44.1 0 0    17 Locked QAM256 17 435.0 8.3 43.9 0 0    18 Locked QAM256 18 441.0 8.1 43.7 0 0    19 Locked QAM256 19 453.0 7.9 43.9 0 0    20 Locked QAM256 20 459.0 7.9 43.8 4 0    21 Locked QAM256 21 465.0 7.8 43.7 19 22    22 Locked QAM256 22 471.0 7.7 43.6 52 8    23 Locked QAM256 23 477.0 7.6 43.0 79 29    24 Locked QAM256 24 483.0 7.5 43.5 186 158    25 Locked QAM256 25 489.0 7.4 43.4 248 617    26 Locked QAM256 26 495.0 7.3 43.6 263 873    27 Locked QAM256 27 501.0 7.4 43.5 476 1207    28 Locked QAM256 28 507.0 7.5 43.4 692 1580    29 Locked QAM256 29 513.0 7.4 43.4 869 2368    30 Locked QAM256 30 519.0 7.2 43.2 845 2630    31 Locked QAM256 31 525.0 7.1 42.9 724 2037    32 Locked QAM256 32 531.0 7.1 43.1 448 1245

Upstream Bonded Channels

Channel Lock Status Channel Type Channel ID Symb. Rate (Ksym/sec) Freq. (MHz) Pwr (dBmV)    1 Locked SC-QAM 1 5120 35.8 38.0    2 Locked SC-QAM 2 5120 29.4 38.0    3 Locked SC-QAM 3 5120 23.0 37.5

Log

Time    Priority    Description      08:04:22 Wed Jun 10 2020   Critical (3)   No Ranging Response received - T3 time-out;CM-MAC=00:40:36:4f:2e:50;CMTS-MAC=00:01:5c:88:0e:71;CM-QOS=1.1;CM-VER=3.1;     08:07:07 Wed Jun 10 2020   Critical (3)   SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=00:40:36:4f:2e:50;CMTS-MAC=00:01:5c:88:0e:71;CM-QOS=1.1;CM-VER=3.1;     08:07:14 Wed Jun 10 2020   Critical (3)   SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=00:40:36:4f:2e:50;CMTS-MAC=00:01:5c:88:0e:71;CM-QOS=1.1;CM-VER=3.1;     08:08:57 Wed Jun 10 2020   Critical (3)   SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=00:40:36:4f:2e:50;CMTS-MAC=00:01:5c:88:0e:71;CM-QOS=1.1;CM-VER=3.1;     08:10:09 Wed Jun 10 2020   Critical (3)   No Ranging Response received - T3 time-out;CM-MAC=00:40:36:4f:2e:50;CMTS-MAC=00:01:5c:88:0e:71;CM-QOS=1.1;CM-VER=3.1;     08:30:14 Wed Jun 10 2020   Critical (3)   Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:40:36:4f:2e:50;CMTS-MAC=00:01:5c:88:0e:71;CM-QOS=1.1;CM-VER=3.1;     08:30:14 Wed Jun 10 2020   Critical (3)   Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=00:40:36:4f:2e:50;CMTS-MAC=00:01:5c:88:0e:71;CM-QOS=1.1;CM-VER=3.1;     08:30:14 Wed Jun 10 2020   Critical (3)   16 consecutive T3 timeouts while trying to range on upstream channel 1;CM-MAC=00:40:36:4f:2e:50;CMTS-MAC=00:01:5c:88:0e:71;CM-QOS=1.1;CM-VER=3.1;     08:30:16 Wed Jun 10 2020   Critical (3)   No Ranging Response received - T3 time-out;CM-MAC=00:40:36:4f:2e:50;CMTS-MAC=00:01:5c:88:0e:71;CM-QOS=1.1;CM-VER=3.1;     08:30:16 Wed Jun 10 2020   Critical (3)   Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:40:36:4f:2e:50;CMTS-MAC=00:01:5c:88:0e:71;CM-QOS=1.1;CM-VER=3.1;     08:30:17 Wed Jun 10 2020   Critical (3)   No Ranging Response received - T3 time-out;CM-MAC=00:40:36:4f:2e:50;CMTS-MAC=00:01:5c:88:0e:71;CM-QOS=1.1;CM-VER=3.1;     08:30:20 Wed Jun 10 2020   Critical (3)   Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:40:36:4f:2e:50;CMTS-MAC=00:01:5c:88:0e:71;CM-QOS=1.1;CM-VER=3.1;     08:30:22 Wed Jun 10 2020   Critical (3)   No Ranging Response received - T3 time-out;CM-MAC=00:40:36:4f:2e:50;CMTS-MAC=00:01:5c:88:0e:71;CM-QOS=1.1;CM-VER=3.1;     08:30:29 Wed Jun 10 2020   Critical (3)   Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:40:36:4f:2e:50;CMTS-MAC=00:01:5c:88:0e:71;CM-QOS=1.1;CM-VER=3.1;     08:30:48 Wed Jun 10 2020   Critical (3)   No Ranging Response received - T3 time-out;CM-MAC=00:40:36:4f:2e:50;CMTS-MAC=00:01:5c:88:0e:71;CM-QOS=1.1;CM-VER=3.1;     08:31:20 Wed Jun 10 2020   Critical (3)   No Ranging Response received - T3 time-out;CM-MAC=00:40:36:4f:2e:50;CMTS-MAC=00:01:5c:88:0e:71;CM-QOS=1.1;CM-VER=3.1;     08:31:34 Wed Jun 10 2020   Critical (3)   No Ranging Response received - T3 time-out;CM-MAC=00:40:36:4f:2e:50;CMTS-MAC=00:01:5c:88:0e:71;CM-QOS=1.1;CM-VER=3.1;     08:32:14 Wed Jun 10 2020   Critical (3)   No Ranging Response received - T3 time-out;CM-MAC=00:40:36:4f:2e:50;CMTS-MAC=00:01:5c:88:0e:71;CM-QOS=1.1;CM-VER=3.1;     08:34:10 Wed Jun 10 2020   Critical (3)   No Ranging Response received - T3 time-out;CM-MAC=00:40:36:4f:2e:50;CMTS-MAC=00:01:5c:88:0e:71;CM-QOS=1.1;CM-VER=3.1;     08:34:11 Wed Jun 10 2020   Critical (3)   Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=00:40:36:4f:2e:50;CMTS-MAC=00:01:5c:88:0e:71;CM-QOS=1.1;CM-VER=3.1;     08:34:22 Wed Jun 10 2020   Critical (3)   No Ranging Response received - T3 time-out;CM-MAC=00:40:36:4f:2e:50;CMTS-MAC=00:01:5c:88:0e:71;CM-QOS=1.1;CM-VER=3.1;     08:34:29 Wed Jun 10 2020   Critical (3)   Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=00:40:36:4f:2e:50;CMTS-MAC=00:01:5c:88:0e:71;CM-QOS=1.1;CM-VER=3.1;     Time Not Established   Critical (3)   SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=00:40:36:4f:2e:50;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;     Time Not Established   Critical (3)   No Ranging Response received - T3 time-out;CM-MAC=00:40:36:4f:2e:50;CMTS-MAC=00:01:5c:88:0e:71;CM-QOS=1.1;CM-VER=3.1;     16:07:42 Wed Jun 10 2020   Critical (3)   Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:40:36:4f:2e:50;CMTS-MAC=00:01:5c:88:0e:71;CM-QOS=1.1;CM-VER=3.1;     16:19:42 Wed Jun 10 2020   Critical (3)   SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=00:40:36:4f:2e:50;CMTS-MAC=00:01:5c:88:0e:71;CM-QOS=1.1;CM-VER=3.1;     16:19:55 Wed Jun 10 2020   Critical (3)   No Ranging Response received - T3 time-out;CM-MAC=00:40:36:4f:2e:50;CMTS-MAC=00:01:5c:88:0e:71;CM-QOS=1.1;CM-VER=3.1;     20:51:40 Wed Jun 10 2020   Critical (3)   Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:40:36:4f:2e:50;CMTS-MAC=00:01:5c:88:0e:71;CM-QOS=1.1;CM-VER=3.1;     Time Not Established   Critical (3)   SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=00:40:36:4f:2e:50;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;     Time Not Established   Critical (3)   No Ranging Response received - T3 time-out;CM-MAC=00:40:36:4f:2e:50;CMTS-MAC=00:01:5c:88:0e:71;CM-QOS=1.1;CM-VER=3.1;     Time Not Established   Notice (6)   Honoring MDD; IP provisioning mode = IPv6     09:10:15 Sat Jun 13 2020   Critical (3)   Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:40:36:4f:2e:50;CMTS-MAC=00:01:5c:88:0e:71;CM-QOS=1.1;CM-VER=3.1;