On the phone for hours only to get transfered, transfered, transfered and then put on hold with no one coming back.

I been having issues with my xfinity stream service and no one seems to be able to solve the problem. I finally called to have the service canceled. I have to explain the situation over and over and over again as they continue to pass me around to someone that is an "expert", but is just some person that is in the same department with no real higher level of expertise. The last time I get transferred they guy ask me for my name and address again and ask to explain the situation. I stated the last guy said he was on the phone with billing department having a conversation about my situation and that he is transferring me to that person to finalize a refund. The guy I get has no clue what I'm talking about and I again have to explain everything which takes nearly 20 minutes. He then puts me on hold mid sentence. I been on hold now for 3.5 hours waiting for him to pick back up so I don't have to explain myself again to another person, but I have a feeling this guy isn't going to pick up the phone and I will be on hold until the system auto hangs up on me.