Volkswagen Vento: My Nightmare

I bought a black Volkswagen Vento TDI (KL 62A 6660), Chassis No: WVWH12604CT062958 on 06/09/2013 from Kottayam EVM VW showroom. Soon after I took the car a series of misfortune happened starting with the A/C failure, paint job and currently the diesel leak from the overflow pipe along with severe engine vibration. 

Soon after I took the delivery of the car, I had problems with A/C. The air-conditioning system would which was rectified after a series of checkups in both Kottayam and Trivandrum service centres. On 03/02/2014, while on a reasonably long trip with my family to Trivandrum, my vehicle's engine started to vibrate vigorously and all of a sudden the engine and engine management warning lights flashed and the vehicle stalled in the middle of the highway. When I lifted the hood, i could see diesel leakage all over the engine block and around the injectors. It was a Sunday and I was stranded with my family consisting of ladies in a highway and I had to hire a Taxi and send them back home. I had to call the roadside assistance and registered a complaint to VW helpline, complaint No: CAL35708. They assigned me to Trivandrum VW, where they took 2 days to rectify/replace the so called faulty diesel overflow pipe. I took the car and then again after 2 days, i.e, on Thursday midnight, again with my family (after a function) I experienced the very same problem. On inspecting myself I saw that the overflow pipe on the 3rd injector was loosely clipped. Inorder to get my family back home I plugged the pipe into the injector with my own bare hands (hot engine and fumes). I registered a complaint again, Complaint No:RSB17851 and my car was towed to Kottayam VW for inspection. After 2 days of scrutiny they found a faulty lock pin and changed it. Soon after I took the delivery of the car, I found irregularities in the engine RPM at idle condition. This was a case of concern for me.  Again the vehicle stalled while I was in Trivandrum on 02/02/2014, due to severe engine vibration. This time the Roadside assistance (Ref No. 2514102661) took 2 hrs to respond a case which was barely 10 kms away from the Trivandrum VW. After waiting for 2 hrs, I eventually had to drive the vibrating car by myself to the service centre. Again, Thank You VW, for your wonderful Assistance. They took 1 whole day and eventually found a faulty injector which was replaced. This time I did not place any complaint to VW because I realized it as an utter waste of time and energy. After 2 days i.e, on 06/02/2014, I began to notice the irregularity in idle RPM, which started to rise. I contacted the Kottayam VW and asked them to take away the car. I had to cancel my appointments due to this mishap. Now, they provided me with an alternate drive for my daily uses and the technicians there might me standing around my car and having a heated discussion on how diagnose the car. Poor, inefficient VW. Being a behemoth in auto industry, doesnt these guys feel ashamed of themselves? Puny in front of Indian brands, i must say.
How can I rely on this car and drive along with my family? The car has just done around 7000kms. What should I do with this car? It is a real pain to me! I have lost faith in this vehicle and company, Volkswagen AG. I no longer feel safe with your vehicle and your technical expertise, after sales services and quality are the worst compared to the so called local manufacturers. Either replace the car or pay me back my money and keep your car. I expect an answer to my grievance.  ordinary car.... ntng muchA/C fault, Diesel leak, faulty injectors, bad wirings.....