[Resolved]  Volkswagen India — polo comfortline / extorting money in name of service and bringing new problem up every time

I have a volkswagen polo 1.2 my i comfortline purchased in the year 2013 from tanya motors, sitapura, jaipur, rajasthan. Chassis no. : wvwa13607dto31969. Engine no. : cjl061088.in the month of february, 2018 i gave in my car for a service amountable to 11000/- as discussed with volkswagen reps from tanya motors and after which i left for gurgaon.in the month of march i started facing an issue with the coolant. I discussed the same with reps from tanya motors and left the car after consulting with the team. I also mentioned an issue with my aux pin. I received a call the following day informing me that 5 new prbol ems have arisen and need to be fixed. I agreed. I then left for the service centre the next day and was asked to pay up 500/- more since petrol has been fuelled in my vehicle for test driving purposes. A certain mr kumawat then informed me of the real issue with the car and not that was mentioned to me and how the prognosis was messed up. I finally paid 22, 000/- and was assured with a test run that how it ran for 50kms without any issue whatsoever. My car was btought home and after some time when i tried to start it it failed to operate. I tried the next day but the car wouldn't start. I called the service centre and argued and finally they took my car back. Now, they call me up telling me a circuit in the engine has short circuited and the total bill is 85, 000/-.
Is this a joke?!! I give my car for a service, i am assured that everything is fine despite repeatedly asking to check whatever they have to. I get it serviced the next month and now something with the engine comes up??? After test driving my car for 50 km the engine just dies? Or is it some means to make the customer keep returning and she'll out more money. I am ready to sue both tanya motors and volkswagen and am not going to pay a dime of the 85, 000/-. You people think the customer us a fool and lay your technical jargon and expect the customer to keep shelling out money. I need my car back functioning. I have made more than enough. Someone tells me one issue and then another comes forward telling me that that was not the real issue. I am all up for suing this nonsense and extortion happening in the name of servicing your car.