Constant Slow Speeds - No Actual Relief / Help

1. Why does support seem so clueless on technical issues?
2. Why do I pay over $150 a month for something that Fiber providers around me can provide for only $65 a month with NO price hikes?
3. Why do I even bother at this point?

I have attempted to contact support more than once, to which they don't seem to understand the issue.

• I should be receiving "up-to" 1000 mbps down
• I should be receiving "up-to" 150 mbps up

My download speeds typically range between 1 Gbps / 1.1 Gbps down, which is more an acceptable for an "up-to" service.

What I don't get is why support can't seem to understand that I have an upload speed issue.  I have explained this issue on numerous occasions, and I either get passed around or disconnected due to lost connectivity of them "sending a signal" to my modem.  Then, I either have to go back through the SAME steps or they just pass me around with no resolution and I just get tired of fighting them.

The EQ I have:

1. xFinity XB7 Modem  (Bridged)
2. Ubiquiti UXC-Max  (Gateway / Router - Supports 2.5 Gbps across ALL ethernet ports)
   1. I have the cloudkey+ to manage and gain advanced metrics of my network

What troubleshooting steps I have done:

1. Rebooted Modem
2. Checked cabling between Modem and Router
3. Checked port negotiation speeds on router  (Uplink shows 2.5 Gbps Full Duplex to modem)
4. Plugged PC in directly to Modem (PC shows 2.5 Gbps Full Duplex)
   1. Configured computer to current IP / DNS / Subnet of Comcast, ran speeds.
      1. 1. Maximum 1.1 Gbps Down / 25 Mbps up  (My computer has a 2.5 Gigabit ethernet adapter, shows 2.5 Gigabit Full Duplex directly to orange modem port)
   2. Plugged Router back in.  Checked speeds, shows similar to PC.

Speed Test(s) Done:

• Ubiquiti Speed Test(s) - Maximum 1.1 Gbps Down  /  Maximum 25 Mbps Up
• Fast.com - Maximum 1.05 Gbps Down  /  Maximum 25 Mbps Up
• Speedtest.net - Maximum 1.1 Gbps Down  /  Maximum 24 Mbps Up
• xFinity Speed Test - Maximum 940 Mbps Down  /  Maximum 23 Mbps Up

So... One of three things here.

1. My modem isn't provisioned correctly
2. My area isn't capable of providing the upload speeds
3. Something is going on with the cabling up-to my house.

That said, no-one seems to know what the actual issue is and I can't seem to get anyone to actually be scheduled to come out to check as they seem to think it's a billing issue vs a physical / hardware issue.