Gomechanic Car Service App - Car repair not done

I have requested for car repair and denting on *th June from Go Mechanic app. Someone from Moto Valley called and said that my request is assigned to them from go Mechanic. He took my car and sent an estimation for ***** after negotiation and mutually agreed on repairing and few parts replacement. They have sent me an estimation of ***** to repair my car, denting and part replacement like Radiator, radiator fan and Ac condenser.
After the work is done one of the employees of Moto Valley delivered my car on **th June at * am. In an assumption that my car is completely fine, I drove my car to office and while driving back home after * km the car broke down again with smoke coming out of the bonnet. I called Moto Valley at * pm and they came around ** pm. I was waiting for * hours.
I went to the garage on **nd at ** pm to check the status and I found that the radiator is damaged when I saw the radiator it is not a new one it like a used one. I am sure these guys haven't used the genuine parts and they don't have old radiator fan and condenser which removed from my car, they don't have them because they didn't replace them.
Because of go Mechanic and Vinayaka Moto Valley's negligence, my car is not working. They are completely responsible for my car damage. They should get my car repaired from Renault authorised service centre and compensate for my mental agony for the last ** days.