Worst Customer Supprt...EVER

I have needed to use the Xfinity tech support in the past they have always helped out. Customer Service is another matter. I was putting in a post and halfway through creating the post the browser kicked me out and lost the text. I have called Customer Service 5 times and went to the store that promised me a deal 4 times and no one can seem to make things right without me payong an additional $250. I was told by the last representative that they would escalate to their manager but there is no Duty Supoervisor that I could talk to and I know that no phone support pool works with no duty manager. I have waited almost a month and have gotten different stories every time. All I can say is if you have a Customer Service issue with Xfinity DON'T BOTHER!