Why does my internet crash an average of 5 X a week?

I have a newer home in an upscale nieghborhood in Franklin Tn. My house is wired for ethernet.

I lose internet often once a day. I go through the reboot system, but wonder why the service is such rubbish with all the money I have invested in xfinity.

Before I moved to this area from Pennsylvania I had fios, and had less issues in a year than I have here in a month.  

Looking answers before I just decide to try another service.

Could it be the rental modem?