Ford India — poor service/ lack of safeguards in your authorised showrooms for customer cars

Address:

Chennai, Tamil Nadu, 600096

I gave my for figo tn 07 ca 7546 for service at eureka ford the ford agency in chennai, india on 25.12.2017 morning for the 50, 000 km service and got it back on the same day evening.
Wh en i got it back i notices that the rear sensors were not working. I thought this may be due to some loose connection and took it back to the centre to recify it.
they tell me that the 3 wires to my sensors have been cut and they do not have the sensor and hence they cannot rectify it and ask me to go to their teynampet showroom!!!
First of all the sensors were working when i gave it for service. But they tell me that a rat must have bitten my wires.
The wire connecting the sensor to the car is missing till the a roll inside the side of the dicky. if this has to be a rat bite, the rat has bitten the 3 sensors exactly at the end and then again entered the side enclosure and bitten the wire again and then swallowed the 3 pieces of wires totally!!! I dont find this believable or even possible on a probability angle.
i even offered to pay them for a new sensor. But they refused to do anything because they do not have spares here for the sensor. They refuse to take any responsibility and simply turned me away .
I raised a complant with ford on their website and after a lot of persuation a person from a company called autocorp comes and inspects the car. He says that the sensors cannot be services and the same have to be changed. He charged me rs.1, 390/- for this. This being a company vehicle the bill is taken by my company but the pain of being cheated in broad daylight by such a big american campany is really painful.