Xfinity Mobile nightmare

It all started when my wife and I went into the Xfinity store to pay off her phone to take advantage of a promotion for up to $1000.00 off of a new Samsung Galaxy Z flip 5 phone. We paid her ph9ne off and they gave us $800.00 credit for her phone and everything went normal. Then 2 days later I decided to do the same thing, so we went in and I paid off my Samsung Galaxy S22 ultra and thought I traded it in. Since the flip phones were not in stock they had is keep our original phoned until the new ones where shipped to our house. My wife's phone showed up and we activated it and we got the mailing label in an email and shipped her trade in back. Then my phone showed up and I activated it. I went to my email to get my mailing label and there was nothing. That's when I realized something was wrong. I went into the Xfinity store and found our that the guy forgot to hit the trade in button. Even after he told me that my phone trade was going to be worth $1000.00. So the way they decided to fix it was to have me return the flip phone under their 14 day return policy and redo the whole thing over. So they ordered me another flip phone and put the trade on it for $ 1000.00. When my new flip arrived it wouldn't let me activate it. So i went back into the store and after getting a run around for over a week they finally got it activated. I also got the mailing label and sent my old phone in. They took my first flip back and shipped it in. Then I got an email saying that the trade in was canceled after I had already sent it in and it was received. The reason they canceled it was because they put it on the returned flip phone and not my new one. So now I have 3 lines of service on my bill and I didn't get my $1000.00 credit and they got my mint condition Samsung Galaxy S22 ultra and they billed me for their own mistakes. I am sick and tired of all of the countless hours I have had to put into this and all of the undue stress it has caused nor to mention the amount of out of pocket money I have put out for this. All because an employer forgot to hit the trade in button on his screen. I'm going into the store on one last attempt to get this fixed. Then I will take all of it to my attorney with all of the text messages containing all of their promises and guarantees that never happened.