Mobile Billing Errors

My wife and I opened our new Xfinity mobile service in October 2024, 9 months later our billing is still incorrect. We traded in our existing iPhones for I-16's same types of model. The first billing at the store was correct, giving my wife the credit for her phone, (spread over 24 months). My phone had to be mailed to me since it was not in stock. I sent my old phone in, tracked it, it was accepted, credit e-mail issues, etc. 

Every month the monthly trade-in credit is not reflected on our bill and I must call and get it corrected, issued a credit memo and am told it will be good to go moving forward. The tickets issued do not reflect that, they say the request is denied. I'm tired of calling, being overfilled one month, credited another and not getting this corrected moving forward. So here is your chance Xfinity, please look into it. If we can't get this taken care of, my next steps will be filing complaints at:

[Edited: "Solicitation"]

If not resolved we'll see you in small claims court for breach of contract. I have every piece of email and paperwork to support my case. 

Let's not go there! It can't be that hard.

Sincerely and unhappily yours,

Titaniumman60