Honestly, telling Comcast you've already switched to a new provider is the best way to cancel quickly. > Me to retention person: Hi, I just switched to AT&T Fi

Honestly, telling Comcast you've already switched to a new provider is the best way to cancel quickly. > Me to retention person: Hi, I just switched to AT&T Fiber and I'm up and running, so I want to get rid of my Comcast internet. > Rentention person: Is this the sort of sitation where you would move your Comcast internet to a new location? > Me: No. > Rentention person: Ohh, well in that case, I'll go ahead and cancel you're account. Ok done now. Literally a 4 minute phone call including automated prompts.