Car clinic Midrand is a ****

Car care clinic in Midrand did me dirty. I took my car in to replace a thermostat as well as coolant pump. The work was done on the 8th of March 2024. On the 24th of May, I was driving to Phalaborwa and my car started overheating. I call them to inform them of this issue and they said I needed to bring it back. How will I bring the car back all the way from Phalaborwa as it would cost me almost 20k for towing service. I took the car to the nearest mechanic in Tzaneen, mechanic picked up the same issue with the coolant pump and thermostat. I requested for the warranty of the parts from car clinic but they’re giving me a runaround.