Someone stole my Wi-Fi and downloaded a torrent and I think Comcast blocked my p2p(?) connection

I received an email about a week ago about someone illegally downloading some "Tangled for pc 2010" thing and that if I continued that they would suspend my service. I most definitely did not downloaded some Disney game(?) from 10 years ago and I figured it would all just be fine if changed all my router and wifi information.

About a few days later I was trying to play a game online and noticed it wouldn't work, I spent hours troubleshooting the game and contacting their support to no success. I realized it was more than likely my internet when I saw that not just my PC but all my gaming consoles, friend's PC and consoles, and gf's PC and consoles won't connect to any online multiplayer game either.

What do I do? This has stressed me out a lot. I am calling Comcast when I wake up to see what's going on but I hoped the forum might have some answers.