reply to JJJohnson
Re: throttling internet The problem here is that it's so slow it can't keep up at all. I can't watch videos in 720p because the buffering isn't keeping up with the video bitrate. It was not like this in the past, and it's not a problem with my connection because other streaming sites will stream HD just fine. I have tried many different videos and they all have the same problem, even Gangnam Style can't keep up with 720p. I've eliminated it being an issue with the specific CDN endpoint by changing my DNS servers to ones in different locations, and using a VPN I have no problems. Something is very fishy here.
Also, to the OP, I used to get similar unsolicited calls from Comcast pretty frequently. It seems to just be a thing that they do. I stopped answering their calls and eventually they stopped calling me.