[Resolved]  Volkswagen India — vento car leakage cylinder head causing to replace engine and company denied to take responsibility of mess by service station and defective part

Our car had crashed and we toed vehicle to vw service station last year; after 1month car was ready but the sensor was showing engine temp high; they took another 3 weeks to fix sensor issue but actually it was engine issue; after few days again sensor started blowing and after consultation on phone they told to ignore and continue driving ; same issue was again started and also radiator fan was making high noise and not stopping after engine stop. Again car was sent to servise station in kolhapur this time they said your use is hardly so rats in garrage had cut wirings and which needs again fix ; again they certified car and gave delivery again we found same issue l this time we consulted with well known private expert and he told engine cly head is leakage due to that coolant leakage is causing issue.. Again we had submitted car and told about 2nd opinion ; this time thy taken it seriously and asked advance of 13k to touch engine; now came with reason that due to leakage head had warpage in 1.6 mm and needs change of whole engine at cost of 4.5 lakhs min ; only to check flatness they charged 8000 rs which is exorbant ; now i have suggested changing gaskets and reassemble engine ; total cost went to 25k ; the whole issue was started with the wrong diagnosis of car and now i have to bare cost 4.5 lkahs ; i have explained and raised complaint to customer care but we had very poor response; not single line replay from customer care and service station is sending mail for balance amount. Please advise how to fight against company volkswagen.