Account settled but not updated.

I took a loan at getbuck in December 2020, in the meantime getbucks changed to nifty, my debit orders went of in Dec and Jan as agreed but this people still phone you every week to remind you that you have an outstanding amount with them, that makes it sound if you are in arrears. So I settled my account on the 12/02/2021 with amount of R11119.09, still to date this is not allocated to my account, worse of all I have used the sms link that they have sent me, so why do I have to phone, life chat and keep on sending proof of payment to diffrent email addresses. My debit order has not been cancelled, an I need my account to be updated to settled. And make sure you remove any interest allocated after I have settled my account, as the settlement amount was the one given by Nifty.