Bad bad after service from Hyundia

I bought a vehicle at Hyundai Bedfordview. The car is due for a service and no one in the store can inform me if the vehicles was serviced or not. Admin staff, Fiolla Jafta does not reply back. Dealer Manager, Siya Qamba also promised to get back to me. They need to pay me a part of my trade in value an nothing is happening and everyone involve di passing the bucket to someone else. My windscreen should have been protected with the clear fusion protector film according to my contract but now it is my responsibility to have it done.