I recently got Xfinity wifi, and from day one my internet is dropped multiple times a day and I don't understand why.
I also see that instead of running a dedicated cable line from the pole to my house y'all spliced(splitter) into the cable line going to my neighbors and ran that to my house. I feel that is not the correct way and a new cable should be installed.
Start here:troubleshooting guide. If you still need help, please post your equipment details (make/model of your modem/gateway/router) and a screenshot of your signal levels and your error/event log. Thank you!