Mtn

I had a MTN cellphone contact before 2019 and paid-up the contact, I never closed the contract because I never knew it should be closed by myself. When I app**** for a home loan then this keeps on popping up, and I can't buy a property due to this account. Mtn then email me with the outstanding amount and I paid the amount with the banking details they give me, the only thing I've been asking mtn and vvm is just to send me a paid-up letter but they can't assist me in that regard.