No paid up letter from MBD

Good day, I had 3:accounts with African Bank which MBD bought them. I made arrangements with them and paid them off in June 2021. I received1 paid up letter and since last year I've been calling requesting for the other 2 paid up letter they keep saying I will receive them.On the other hand they keep updating my account with Transunion claiming I still owe. But when I call them they tell me my accounts are closed but that's not what I see on my credit report. I keep giving them email address as they claim that the problem might be my email address and what surprises me is that the same email address they did use to send me the paid up letter and I did receive it.

And my other issue is that when they were calling me regarding those accounts, they were three with different references but on my report is one account with another reference that's why Transunion are unable to assist as they take what was submitted by MBD.

This is really frustrating and it has been going on for more than a year and every month they keep updating my account.

Kindly assist you are my last hope, I have tried everything in my power to get this issue sorted out.