National Traffic Information System (eNaTIS) is ****ming me

On February 26, I app**** for a licence renewal with eNaTIS, completed the application paperwork appropriately, and paid R1,477.40. After two months, in April, after following up with them, they informed me that there was an outstanding sum of R234.04 and sent me an email with incorrect car information. When I told them it wasn't my car, they apologised and sent me an R234.04 invoice, claiming that their system mistakenly charged me.

On May 8th, I went to their office and paid the outstanding sum. I was promised that I will have my car disc no later than May 12th. I did not receive my disc; when I called them on May 15th to see if I could pick it up from their office, they informed me that my car details were incorrect. They needed to resend the application. Today, May 20, I still don't have my disc; they sent me another invoice for R234.04. It looks like I'm being ****med because instead of giving me my disc, they keep asking for money from me. Now I'm driving around with an expired disc