T-mobile 5g home internet forcing to tower with no data issues/changing towers/bands

So i ended up moving and canceling about 5 days before my next bill date ---WATCH OUT T-MOBILE IS STILL TRYING TO CHARGE ME FOR THIS SERVICE AND I HAVE NO WAY TO LOG IN WITHOUT LINKING A T-MOBILE NUMBER MY ACCOUNT IS INACCESABLE TO CHECK MY BILL OR ANYTHING YET I CAN STILL LOG IN TO MAKE THIS COMMENT

This has by far been the worst service i have ever had in my life and T-MOBILE in general is horrible to do business with ---to cancel and return my device i went to the t-mobile store thinking i could do it all at once NOPE i pretty much got yelled at to leave the store that they only sell plans there ---another store employee at least noticed how rude the lady was and talked to me and gave me a phone number to call ---this is insane if you ask me ---keep in mind i got this plan and device through the chat….that offers 0 support and i cant log in and even on the phone they want a phone number that does not exist anymore i wonder how much money t-mobile is stealing from people who have not noticed there being charged after canceling----this company really should not be aloud to do business at all