Bad services at Motorama Goodwood

I traded in my previous vehicle in for a new vehicle on the 3 March at Motorama Goodwood. The salesman named Marty assisted us in this.I've signed an agreement with them that they would settle my previous vehicle. Up till today which is the 30 April they have never settled my previous vehicle where the bank keeps taking off a payment for my previous vehicle that I had. Now I don't understand why should I pay for a car that I no longer have? The same thing happened last month and we fought for that money. They eventually paid it and Marty promised that they would settle my previous vehicle. The bank took off the payment again this month, and we have to fight again for this money which belongs to me as the customer. Everytime we call Marty he keeps saying the owner will call us back which was 3 days ago and we still waiting. We called again and he said that his busy with a client. This is shocking service from this dealer. This is an example of bad service from a car salesman and a dealership.