Xfinity Mobile putting me through [Edited]

On 5/18/25 I placed a online order through Xfinitymobile.com for new service and a Google Pixel 9 Pro Xl [Edited: "Personal Information"]. I received it on 5/20/25

There was a promo if I sent them my old phone they would give me a credit towards the cost of the pixel and also a virtual prepaid card to pay off the balance I owed to Verizon.  I wasn't really pleased with the Pixel so I made an appt at the Xfinity Store for 5/28/25 to see about trading it for a different phone or returning in buyers remorse. When I get there the sales rep Austin was telling me about the Galaxy S Edge I decided to return the phone in buyers remorse and wait until the Edge came out. After sitting there for almost 3hrs some how I ended up loosing service until 5pm the next evening. Once I got off work I went back to the store to see why was there again for alpst 3hrs rep Chris got it working again I left less than 20min later no service. Went back took almost 2 hrs. Some how I ended up with another line activated another line on my acct on a esim on my iphone 13pro so I now had 2 different numbers on 1 phone unknowingly. I keep texting the rep Austin called customer care a few times nothing resolved. I then went back to the store 6/6/25 because I had been checking on the process of the Pixil I return and couldn't find anything showing it had been returned on the Xfinity app was still showing the Pixel in use on my number. Rep Chris did a few things in the comp. and on the phone to try and change the IMEI in the system to make it to where I could order the Edge at a discounted price. It was unsuccessful He did provide me with 2 pieces of paper showing me the tracking number and a EMC request was filed. To try and get the return and credits issued to my acct. Have called CC multiple times to get told wait wait wait they'll be issuing credits and on and on. I'm still getting the run around. Not sure what the next step is. was told by a supervisor this evening that he didn’t have enough proof or evidence I would have to go back to the store and get it taken care of the supervisor literally has the tracking number and everything that I’ve provided to him and his system he just didn’t wanna help or take a look then he hung up on me. They should not be allowed to put their Customers through this. It’s Affecting my credit score now. I was trying to purchase a home probably won't be happening now.  Can I file a law suit for this?