lose internet connection lately several times a week

I received a call from Xfinity however who ever called left voice mail and I can not understand the 7 digit call back number they left. 

Oh man, that is certainly not what we want to hear @jgro55! We would be more than happy to dive into the details on our end, and ensure that everything is resolved with the connection. Can you please send us a DM to get started?

Please send us a DM with your full name and address to Xfinity Support.
To send a direct message:
Click "Sign In" if necessary
Click the "Direct Message" icon or  https://forums.xfinity.com/direct-messaging
Click the "New message" (pen and paper) icon
The "To:" line prompts you to "Type the name of a person". Instead, type "Xfinity Support" there.
As you are typing a drop-down list appears. Select "Xfinity Support" from that list.
A "Xfinity Support" graphic replaces the "To:" line.
Type your message in the text area near the bottom of the window 
Press Enter to send it

I was able to listen to voicemail and get the ext number, I called and left msg , telephone tag I guess

nothing to post, I called them back and left message and have not heard back. 

They did run a line test with no issue detected , and I finally got to talk with tech support about cable cards that is a no go.

I have had similar problems since last summer. I was having micro-outages which are not good and had to complain a lot to get a ticket put in. It turns out that I was right when I had fought to get a ticket put in for an engineer to look. I Live in Minnesota in the Twin Cities and for about a year now a Xfinity contractor has been running fiber above and underground, replacing all the nodes and amps and running power to the huge amps hanging on the lines so that we can have mid splits or docis 4.0 Which from looking at the nodes we are skipping mid splits. Any how every time I logged on the Xfinity page it would show service updates were coming during the early hrs. of the mornings, and this was the only way I would know as they do not send emails for this :( So after suffering slow speeds and micro-outages they finally checked and fixed things. Then of course the Snow came, and everything was fine as it is too cold for people work in bucket trucks in the winter. Now it is warmer we are going over the same old ground again and the contractors are visible in area and the same slow speeds etc.