58 000km on the clock and must pay R 71 903 for new injectors

Took the Polo 1.5 TDI in because it lost power . Got a bill of R 1097 and on my way home the vehicle lost power again. Paid R 700 for a tow-in service and the vehicle was there for a week. R 19 338 later the vehicle lost power again and had to pay again for a towing service of R 700. Just got a quote saying it is a different injector/ cylinder and they must for just in case replace all 3 with a cost of R 50 068. This car has 58 000 km on the clock. Please do yourself a favour and do not buy a Polo