Pathetic service

I called MBD on Monday asking for a settlement quote. The person I spoke to told me they would not be able to send me a written quotation but that I should rely on the recorded conversation, she gave me the banking details and the settlement amount telephonically. I paid R4271.09 on the banking details she gave me on Monday right after our conversation. On Wednesday I received an SMS stating that no payment had been received. I then called and was asked to send a proof of payment, I did but it was not even acknowledged. This morning I called MBD again and the call centre agents said they could not help me because they were not working on my account and kept giving me different numbers to call. I want you to acknowledge my payment and send me a paid up letter and update my credit record accordingly.