Bad customer service

I’m under Debit review, debt review made a payment on the 01/10/2024 the payment have not been allocated and when they started paying your account there were 2 accounts which was HI-Fi Corp and Mr Price, now there are two more of which I don’t know where they come from, I have requested a settlement discount on the Mr Price account via your WhatsApp portal which I find it very frustrating cause it’s not helping, the discount was calculated without the September payment which is not reflecting I tried to send proof of payment via the WhatsApp but ppl handling that are useless, I tried to call your number the was no answer, I’m planning to close one account, but discount offered does not include September I need that to be rectified so I can make payment as per WhatsApp balance the last payment was done on the 29/08/2024 and they have been paying you since last year surely they use the same reference but why payment has not been allocated cause the send me statement. Please update your payment and send updated statement as well as new settlement discount on the Mr price account so I can pay it & I was offered an option that you can pay it over fee month and someone was going to call me, since last week I have been waiting for a call and no one did. Your service is worst as you only communicate via WhatsApp your phone no one answer