Misleading client into false contractual agreement

I was involved in an accident on Saturday and I was taken to hospital at that time and I left the car at the scene. A towing truck came and said his charging 650 for towing the vehicle however he suggested that they take it to their yard so we can get a quotation and if we don't agree with it we can pay the 650 rand and get the car towed to where it was initially supposed to go. Today we get here at the yard they are telling us they haven't assed the vehicle and if we want to take it and it will not be fixed by them then we should pay 8000 plus in Oder for the car to get out of the yard. We were deceived to start with by the tow truck driver which happens to be a sub contractor for Help 24. Apparently they get plus 3000 for bringing in a car and they telling us they have already paid him on Saturday however on Saturday the offices are closed and they now don't want to provide us with an invoice showing the payment made. <br> <br> Please assist in this regard as they are fighting for the 8000.