Thieves

I'm getting charged for a phone that I returned to the store because, instead of doing that, I was supposed to ship it? 

My adventures with Comcast started when I got convinced to change cell phone providers(ATT) and decided to trade in my iPhone 14 (128gb) for a new iPhone 16 pro (512gb) . As many of you know, they don't carry the 512gb phone in store, so they told me that it would need to be shipped. 3 days later I received the iPhone 16 just to realize that it was the 128gb version. 

I went to the store to exchange it for the correct phone (iphone 16 512gb) which the CSR made sure to do the exchange for me since the phone i got was not the one I ordered. A month later I looked at my bank statements and realized that xfinity charged me $1090 plus my monthly fee. I called and asked WHY and all I got was 

"It was a mistake. I promise and assure you that we will refund that money". A month went by and after numerous calls they finnaly gave me a full refund. 

Last week, I paid my monthly bill(monday). Like always, I was going through my statements and saw another charge from Xfinity, this time for $1030. I've called and have not gotten any resolutions. I've been told to go to the store since they couldn't find the IMEI for the iPhone 128gb that I returned. I finally had the opportunity and went and a Phillipines agent spoke to the manager at the store, who confirmed that I had returned the phone. On Friday last week, I got promised a full return and till today I have gotten NOTHING.

I'm frustrated, tired and very angry.