Exposed wifi cable, internet keeps dropping.

As a test, does a computer / device that is hardwired directly to the router / gateway device with an ethernet cable have the same problem ?

With this test, we are trying to isolate this down to being either a WiFi-only problem or a problem with the general connection to the Comcast system which would of course affect both. It's a good first step in troubleshooting before proceeding any further. 

@GiannaZ Thank you for taking the time to reach out to us here on our Xfinity Forums! I can definitely understand the frustration if your connection is dropping, as well as the concern to see a bunched up cable outside the home. I would love to take a closer look at the signal levels and have you send us a picture of the cable in question so I can get a better idea of what you're looking at. Please send us a DM to Xfinity Support with your full name and address to get started.

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

@GiannaZ 

Have you had a chance to try that test ? Please respond right here in your topic on these public help forums. Thank you.