Blatant Lies and Beyond RUDE Supervisor

I am absolutely disgusted! My husband and I recently had Xfinity internet and mobile services. Internet first and then we added the mobile. We moved to a new address (just across town-still in the same city). We were told that they didn’t offer internet at the new location. This was no fault of our own but we were told that because of this we would have to pay an additional $50.00 a month for our mobile services because the internet and mobile were a bundle. This was something that was never explained when we added the mobile services but we didn’t argue the additional charges. We paid these on top of our monthly bill every month for almost a year. Finally, I was due to upgrade my phone and when I went to do so I was told that without their internet services I couldn’t upgrade. (Internet that I didn’t have because THEY didn’t offer it at our new address!!) The only way I could get a new phone was to buy it outright. I’d had enough at this point. So, we paid off our phones and ported our numbers to a new carrier (T-mobile, and they have been a breath of fresh air after dealing with Xfinity!!). We tried to stop the last automatic payment from coming out but of course Xfinity took it anyway. We called customer service and explained our long, unique story and dissatisfaction and after an hour long conversation with the agent, were told that a credit/refund would be issued in the full amount of our last bill. Totaling $148.82. We waited a couple of days and hadn’t received the credit. We called again. We were then told the payment was pending and that we would see it in 24 hours. No such luck. We called a third time a couple of days later and were ASSURED that it would be credited to our bank account in no more than 48 hours. Finally, we called a fourth time. We asked for a supervisor. At this point we were both upset but tried to stay as understanding and cooperative with the situation as possible. However, the supervisor got on the phone and words CANNOT express how RUDE and aggressive he was. He flat out told us we had been lied to. I was floored. He proceeded to tell us that we weren’t receiving anything at all. Credit or refund of any kind. He offered no other solution or apology. He refused to acknowledge any wrongdoing. He interrupted me and talked over me. Said his job was not to be sympathetic or understanding to the situation- and that I couldn’t speak to anyone other than him. When I repeated his name to make sure I had it correctly- he very condescendingly said “yep, [edited:PII]” to spell it out for me…. Someone needs to review these phone calls and hold someone accountable. ESPECIALLY the call with the supervisor in the mobile department named Omar. The way we have been treated and lied to is absolutely disgusting! 
Let me just add that when I called back to find out how I could file a complaint, I was asked to provide an email where they could send a link. That agent said I should receive the email with the link in 1-2 minutes… Of course, I never received an email of any kind.