Popular Maruti — multiple calls for service

Address:

Chennai, Tamil Nadu

I receive calls from popular maruti saligramam for service almost daily two to three times from different numbers.

Already every family member has mentioned not to call back. But they say they have updated but the next day, i get the call.

If it is one number, we can block, its just some unknown number.
Not sure where else to complain.

This happened for first service, second service and now all the free services are over, and they call for paid service. We have complained in the center where we bought the car also.