I've had the worst experience with your support team

For over a month, I've been trying to get help from your team regarding setting up my mobile service. Chatted with over 4 different agents, spoke with some on the phone, and even went to the store in-person last week, but I keep being told the same thing, "your mobile service is active on our end, not sure why on your phone, T-Mobile is still listed as your cellular network provider. We'll look into it. 2 hours later - "check back with T-mobile, everything looks alright on our end."