Im living in a nightmare and Xfinity is the monster

I have been sent two sim cards that are useless and that is because someone paired it with s stolen phone. My stolen phone. It was NEVER paired with it to begin with. It was the a samsung but i didnt know that. I thought the sim card knew what it was put in . When i was sent a sim card which was replaced from the broken samsung  i put it in my moto e and it worked . Then i put in another moto e and when i reported 2nd one stolen  i gave the imei number for  the stolen phone why would you pair a new sim card to  a stolen phone? It makes no sense. I have spent almost a month on this and  NO ONE WILl fix this. And i cannot take it anymore. This is literally made me sick and my blood pressure is very high and i normally have low blood pressure. I live in SC and we are in hurricane season so if something happens I will not have a working phone. I have been abused mocked and gaslite by Xfinity reps . The worst one was George who is in the escalated department for FCC snd i believe he paired it. All i wanted  was a new sim card to ise in my old moto e which does show up in account but stolen one is paired. Customer service is a nightmare  and they have no authority to do anything other then sell. A d btw both moro es are Xfinity phones i bought from ebay . And that is where my issue lay. Because i eont buy a new phone. And it says on my account that im getting s year free if mobile , its free because there is NO service. No phone and no customer service.