Trade to upgrade iPhones gone wrong

iPhone 15 Pro Max is released. Xfinity Mobile offers 830.00 trade.  We take 2 IPhone 13 Pro Max to Xfinity Store. They examine, confirm pristine condition. Place order for the 15 pro max.  Phones are shipped to us. Receive email for 1 trade mailing label. Had to fight to get mailing label for second phone.

Send one phone in but two weeks later received it back stating “Not accepted, will not turn on”. WHAT!  Turns on fine, sold on marketplace for 650.  A loss of 180 from xfinity.

Sent second phone in, received email “accepted for $383.00” They sent us a check. I said NO, The offer is for 830 for perfect phone.  Filed a claim for them to fix the problem.  Didnt hear back.  Called xfinity, they said send in phone and they will apply 830 over two years.   They already have the phone and sent me 383.00. They say they can’t find transaction with assurant. Are you kidding me!! This whole thing is a joke!!!! And we are out $627.00 in trade value.

I am keeping this short to spare everyone the details. Many, MANY calls to customer service, and trips to the store only to be frustrated in the ignorance.