My contract ends 15th July 2021, I rang up to end the broadband contract on this date last month and this was confirmed on the phone and the lady closed my account. I was sent the pre paid parcel to send the wifi box back (which I am going to do tomorrow). However I didn't get an email confirmation, so today I rang up virgin media to confirm it was closed, but I have forgotten my security password, the man on the phone couldn't confirm my identity because I cancelled my direct debit, but did say that the only thing he could confirm that the account was definitely closed. However when I looked at my account on the app, there was a bill for the amount which would've been the new contract price. I am very confused by this and can't get any information on the phone as I dont know my password. Is there anything I can do? It has been confirmed TWICE that the account is closed, so why have I got a bill?