Poor Service, Poor Coomunication

I had a vehicle that was financed by Wesbank. unfortunately it was involved in an accident in June and it was written off. The insurance paid and there was a shortfall which was also paid by Motorite. I received a call in September telling me that I owe them +/_ R10 000, they couldn't explain to me what is it for instead I was told to contact motorite. Motorite referred me back to the finance house to explain what is the amount for. I tried phoning WesBank again but was unreachable. now I'm receiving emails that I need to settle the outstanding amount. I cant even reply on that email and there is no contact number on it. after googling the number, I've been sent from pillar to post , the guy that I ended up speaking to, said he will transfer me to Nomfundo Gugushe, Nomfundo was not at work today an they said they will transfer to Prudence. I kept on holding till the line got cut off. this case has been dragging and I don't know what to do now. as far as I know the vehicle should be settled now, or else be given an explanation for owing the money