Volkswagen India — Faulty part which led to problems in timing belt

Address:

New Delhi, Delhi, 110063

This is regards to my car bearing redg number - DL8CY 0372 which was purchased in the year 2011 form Globus located at Gujranwala town, New Delhi-110033.

today i.e 29/1/2016 we sent the car for problem to Volks wagen service centre Moti Nagar for a problem regarding speed consistency. There when the accessed, we were told by the service advisor Aman [protected], that due to a mechanical fault in the Collant Pump the coolant has leaked and gone on to the Timing Belt which has damaged the Timing Belt and the same will have to be replaced along with the Coolant pump.
Firstly I fail to understand that how can a mechanical problem occur. Moreover there is no symptom of the same. Moreover not a drop spilled outside the car and the same is directly above the timing belt.

We buy such expensive Cars and will also have to face such enormous reparing charges for no fault of ours.

This is ridiculous