Car service not honoring their warranty

I am Gcinithemba Moses Masuku, towards the end of April-2022 I took my car to PROTEC AUTO KEMPTON PARK as the car was frequently showing a coolant warning light on the dashboard every 20 kilo’s of driving.

Protec auto diagnosed the car and gave me the quotation of which it consisted of 1. Labour 7.5 Hours R 5625,00 2. Diagnostics R 750,00 3. Sundries R 180,00 4. Oil cooler pipe to cylinder head R 370,00 5. Pipe to water pump R 1047.69 6. Pipe upper water bottle R 570,77 of which it was later taken out. 7. Antifreeze and summer coolant 4 units R 992,92 8. And an added tax of R1430,46

The estimate was a total of R 10966,84.

I gave the service provider the go ahead to strip and fix the car with a deposit of R 5000, few days later I was called and told my car is fixed and ready to be collected assuring me that the car is fixed and the warning is gone plus it has a bosch warranty should the problem come again. I paid R 5172,18 as the balance for the car to be released. To my surprise just the following day morning before the end of 24 hours after collection the problem showed again. Now the problem is that when I take the car back I am charged another 2,5 hours of labour(R1875,00 ), Antifreeze and summer coolant(R 248,23) and tax (R510,48) a total of R3913,71. All the labour hours and parts I paid for on the first time did not work and was unnecessary, Now PROTEC AUTO KEMPTON PARK is threatening to kick my car out of their workshop should I not pay the money.