[Resolved]  Samara Hyundai Hyundai Service — overcharging, misusing vehicle given for service

I gave my six-month old I-10 car for the second 'Free Service' to Samara Hyundai Dealer Service at Mayapuri(B-18, Mayapuri Industrial Area, Phase I, New Delhi-64) on 3rd August and their driver pickedup car at 12noon ( mileage 3006 km). The workshop supervisor rang up soon after the vehicle reached them and recited a series of expenses on various liquids that would cost abut Rs1700 and asked me whether I would agree and can the work be started. I told him that it is extortion in the name of Free Service. I told him to do what the company recommends.
Later in the evening as I kept waiting for the return of the car I repeatedly rang at 6pm, 7.15pm and 8.30pm. I was told that the driver has had to go to Gurgaon and the vehicle cannot be delivered at night and the same will be done at 9.30 am Monday.
The car arrived at 10.30am today, 4th August, as I was impatiently waiting to go for work and to my utter surprise the mileage (3090 km) indicated that the car had been driven for a total of 84km while the distance between my place (Netaji Nagar)and Mayapuri is about 10km. The halt overnight and the usage of about 67km of the car entrusted to them for care is a breach of promise. Their claim that it was for checking is pure fiction as this car had no problems and sparingly used in six months. It is also a worry as to what illegalities might have taken place when it was being used unauthorizedly.Loss of about 300 rupees worth of petrol for me, which is another addition to the loot.
The bill presented indicated that I had to pay Rs 1441/- for the following:
Engine Oil 3.1 ltr =Rs 493.00
Oil Fillter 73.00
Injector Cleaner 320.00
Oil Treatment 362.00
Vat on Part 94.00
vat on oil 99.00

The order Number is not mentioned in the cash memo and this is the only document to say that a transaction took place between me and the service provider.
No receipt was issued. The cash was collected by the driver who came with the car.
The Coupon for Free Service was taken out and the counter foil was signed with date without mention of the servicing agency and NO RUBBER STAMP WAS AFFIXED to the counterfoil.
All these indicate the kind of service provided by the Authorised Dealer-owned Service. The charging for 'OIL TREATMENT' and 'Injector cleaner' are probably only to pad up the bill as this is a vehicle that did not give any problems. The absence of any order number or receipt number are indications that the company has no intention of paying any taxes /VAT and the entire amount is unaccounted - cheating the Government as well as the customer.