Title states everything I closed my account with T-Mobile paid off all phones and all lines. I even got the one time pin to switch me and my wife’s phone number over to Verizon. Apparently whoever I talked to on the phone for t-mobile support left one of my 3 lines open (I had the deal for 3 lines). But autopay was turned off I never even saw a balance until it already went into collections. How can I dispute this as the account should have been closed and paid off and it’s an error on supports end?