Xfinity Mobile

Hello. Is there someone that could effectively assist us on the return label for a faulty cellphone we purchased at the xfinity store? I have called 4 different days since 8/7 (when the issue was supposedly resolved) and have already spoken to at least 11 different reps and been on the phone for at least 2 hours each time. Ive gotten a different story every single time.   We are frustrated, disappointed and exhausted at this point. Can you help? You got our tv issues straightened out last month, which we are grateful for at least!

We have never had this many issues with xfinity since being a long-time customer.