Stuck between a rock and a hard place

My new Grand i10 frequently gives me a problem that it wont start. I first went to hyundai Strijdompark. There I was told to book the car in without any body just check on my battery or small common problems. I needed my car as I was on my way to a funeral. It happens twice again and I went back to Hyundai after I complained them. The lady Innocentia was very helpful. The foreman Ernest took my car for a check. He told me that my battery was fine and they reset the computer. No problems were found. We advice me to contact my tracker company to check on my tracker that could cause the problem. I contact Discovery DQ TRACKER. Spoke to Mtata. He said they can not just sent a technician out to check the tracker battery without proof from the dealer that this is not a fault on my vehicle or battery. Contact Hyundai again seems there is a problem to get some proof. Left messages for manager Justin Dylan aswell. Now I am stucked with a problem between to party that I am paying for a service as this is not for charity. Still have the problem with my car.