Worst service! Consultants drop the call on customers!

I was handed over to MBDCS debt collectors for a cape union mart account. I phoned cape union and wanted to pay off the whole account not just the arears. So they told me to contact MBDCS and ask them for the full amount to setlle the account as it is with them. So i phoned MBDCS on the 25th of July at 17h20. They gave me a settlement amount of R2799.04. I told the consultant i was speaking to that the amount doesnt seem right and he must remember i want to settle the whole account and cut uo the card anx never ever pay a cent on a cape union mart account ever again. He said yes this is the amount but it is a disscount for today only so I must pay before 12 that evening. I paid the account that evening and then phoned them next day for a settlement letter. They advised me to wait 48 hours for payment to reflect. After 48 hours i phoned again just to be told that they cannot issue me a settlement or paid up letted and that cape union should send me a settlement letter. I phoned cape union just to be told no sorry the account isnt settled. And that MBDCS gave me a wrong amount to settle. I have loggex numerous complaints with MBDCS and everytime i speak to their consultants they hang up the phone when i lodge my complaint or they even sometimes pick up but do not speak to me just to one another. They are extremely rude and after loads of calls and numerous consultants disrespecting me and hanging up i finally spoke to a manager whom loged a complaint on my behalf. However after that day i have not gotten any response from them on the complaint and wehn i phone in i can never manage to get a manager on the line. They also seem to lie to cover their tracks as one will say we can never see the full account only thr arears where as another one will say i see your areara are paid up but you still have an account of R ... with cape union in total. One will say we cannot see any notes on the system as the account is closed on our side and then the next person will say i see you paid us on this day and or you phoned in ons this day. Arent they supposed to keep records for 5years after terminating my account? And should they not be keeping records of the consultants that interact with clients? I have also asked for the recording of the 25th of July 17h20 but have not recieved anything or any feexback from the manager that said they will listen to the recording and geg back to me within a week. In the meentime cape union keeps sending me accounts and i am getti g a bad credit score and i am busy buying a house and this is going to negativelly impact me ons this! Please can you assist with resolving this issue?