How can I escalate a recurring issue?

I moved from across town 2 months ago. Before the move, I called and spoke with an Xfinity rep to let them update information for my internet and mobile service (all through Xfinity).  I was told that I could bring my existing Xfinity-provided modem/router. After the move, I called and set up internet with an Xfinity employee and activated the equipment.   A week later I noticed that my mobile bill had gone up, I spoke with customer service and they told me it was because I didn't have internet and mobile service together. I got transferred back and forth between internet and mobile departments. Finally, after an hour I got the billing fixed and was told it would not happen again.

A week later I got an updated bill and noticed the charges were back on my account. I called back in and an hour later the charges were reversed and I was promised that it would not happen again. It was at that time I noticed my account was still linked to my old address and thought that may have something to do with the issue. I called back the next day and tried to resolve that and after two hours of my day I got no definitive response. I hoped it would resolve itself. It did not. 

Last week I got an upcoming bill for $100 for unreturned equipment, I called and was told that it was the old router not showing linked to my new address. After 2.5 hours was told I got the equipment transferred and the $100 charge removed and the billing for Internet and mobile were linked so I would not have to call back again. I downloaded the transcript to make sure I wasn't misreading anything.

Today I checked my account and saw I still had a $100 bill. I contact Xfinity for help. Again I was told that the charges would be removed, the equipment was linked, and that it wouldn't happen again. I got an escalation ticket [Edited: "Personal Information"] and that the problem would be solved. No less than 10 minutes later I got a text telling me that the ticked was closed and not processed.

I called back and got another promise that everything would be resolved and that I would get an email to let me know the resolution.

Its been over 6 hours and I have not heard back.

• I still have a $100 bill for unreturned equipment, that I am using and was told to use by Xfinity
• I cannot access the internet setting from the Xfinity app anymore
• My address is still showing as my previous one.
• No matter who I speak with at billing I get nowhere.
• I still need help resolving this issue.