Help with a refund!

Hello... I've been waiting for a refund on an Xfinity Mobile order for over three weeks. I've tried contacting them via chat, I've called many times, and on the last call, I was on the phone for over three hours and was transferred to five different agents, none of whom resolved my refund issue. I even went to my local Xfinity store, and they only gave me the customer service number, but their phone service is incredibly unreliable. Each time, they've told me the refund was approved and that I would receive it within three business days, but it's been over two weeks, and I haven't even received a confirmation email or a refund tracking number. I rejected the phone order on October 15th, and it finally arrived at the return warehouse on October 20th. I'm writing this on November 10th, with no response whatsoever. The phone service is terrible. Could someone please check the status of my request and help expedite the process?