Refund due

I took delivery of my new vehicle 4/10/2017 to which I traded in my old car for the 2017 Nissan QashQai I was supposed to receive a refund back from my trade in total up to 2 months installment 10000. I have complained with the sales person who assisted me Jan Monyane when I will be getting this money he said 9/10/2017. Friday 13/10/2017 called Nissan imperial spoke to his manager Andries Kruger he promised to give me feeback 16/10/2017 but didn't call I had to phone him back. When I called he said I must wait until the sales person comeback to work. This is UNACCEPTABLE to say the least. I have been waiting 3 weeks for this. The service I received from this dealership from day one was poor they are only interested in reaching they monthly targets no respect for customers