Being charged twice a month for a service I don’t have

Hello,

Over the last few months I have been getting double charged for an account I no longer have. I transferred my account from one residence to another and then I decided to upgrade from 500mbps to 1000mbps. However the guys were lazy and just made me a new account instead of settling the old one. I am currently paying 90.31 the last few months to get 1000mbps but my account still says I’m being serviced 500mbps. And on top of that, I am paying 60-65 dollars for I don’t even know what. But my account and statements on the Xfinity app reflect the 60-65 dollar payments, but I keep getting texts and emails and charges on my bank statements that reflect an additional charge of 90.31? How am I being charged all of this money and it doesn’t exist in the system? Please help me correct this. I have been calling for weeks to get this resolved, but to no avail.