********** and *********** staff/company

I made a call to MBD on the 21/02/2019 advising them that I would like to settle my Identity account and spoke to a guy named Sive and he told me that my outstanding balance is R1878.26, however if I take discount option I will only pay R1337 (and save R500) which meant that MBD would make two debit orders of R668.90. I agreed to that option where they would debit my account on the last day of the month. I confirmed with Sive that as son as the last payment is made I will receive my paid up letter and he agreed. On the 27/02/2019 the first debit order of R668.90 went off my account and on the 28/03/2019 I received a text that they would debit on the 29. The debit order went off yet I received notifications of all my transactions on the 01/04/2019. However I have phoned MBD since and I'm being sent from pillow to post regarding getting my paid up letter. I was even told I need to send them the POP to ********** however even my bank said that is not possible because the company made the debit and out reflects on my account and they should have the money on their end. Yesterday (8/04/2019) I spoke to Vee who told me that I'm still owing R800. I asked to speak to a manager and was put on his for 20mins only to be told the manager is busy on the phone and I asked to be called back but no one has bothered to call me back. I'm furious by the ***** happening here when all I'm trying to do is pay off my debt and rectify my debt.