Standard bank VAF account funds not allocated correctly

Good day

I have been struggling with the problem for about a year and a half. I bought a vehicle through standard bank vehicle asset diversion. Standard bank phoned me last year and said my account is in arrears with around +- R 20 000. I told them its not possible because i haven't skipped 1 payment. I send them all my proof of payments. But everyday they call me telling me i am in arreas. I keep telling them i did send my proof of payments and this went on and on. I send my proof of payments more then once to standard bank. Then they gave my account to attorneys they phoned me also. I send them my proof of payments more then once still nothing happed. Then the attorneys send my account back to standard bank again. Now standard bank is calling me again everyday but now the arrears amount changed also send my proof of payments again. Then they send my account to a debt collector. I also send my proof of payments to them. I then printed all my proof of payments and my montly statements from standard bank and took it to the dealership where i bought the car. The guy at the Dealership called standard bank and we both spoke to them. But every 15 minutes we get cut off the call, eventually we saw that the montly statements doesn't correspond with the amount i have been paying for example the statement said i paid R1300 for January but my proof of payment is R5600. A few of this months doesn't correndspond. Standard bank pulled a report. This report stated i didn't pay 2 months last year and that is way i am in arreas with +_ R10 000. Standard bank said the amount wasn't allocated. But nothing happend. The debt collectors called me again and i explained everything to them. Send all the payments and monthly reports to them. Now my account is back at standard bank. They called me i explained this to them and send a email to the lady i was talking to. She rep**** the funds is reflecting but must be allocated. That was 2 weeks ago. But they keep calling everyday. And i keep telling them i did email them and provide them with the email address but still nothing happens. Everyday someone new is calling. After all the proof i sent and after all the explanations nobody does anything to solve the problem. I even emailed the *******ion apartment of Standard bank and i am still waiting for feedback. Please help me