Wesbank bad service

I bought a car last year march with wesbank,it was a chevrolet sonic.unfortuately i had an accident two weeks after buying the car.my insurance paid the bank and I was left with a short fall of R39000. I continued paying them the very same instalment I had to pay for the car which was R2600. On the 25th of february 2019 I settled the account. I had to pay R14000 to settle the account according to the statement they sent me. Then a week later I received a call from Brooks &Luyt inc informing me that wesbank had handed over my account because I am not paying them.I then explained to the caller that I dont owe wesbank. I then called wesbank to find out how my account ended up with the lawyers and they said they did not hand over my account.I then took it that the matter was sorted. I was suprised to receive emails and sms's again last week demanding money. I also suspect that wesbank did not submit correct information about my credit history to credit berua because I have tried to apply for another car shortly after paying wesbank but I was declined. I feel my rights as a consumer has been violeted. The lawyers are harrasing me.