Panasonic — Ownership of service for AC

I have bought two Panasonic AC(s) from Vasanth & co Chennai. Both of them were installed and were working on the first day. We did not use them again for 1.5 months and one of the ACs stopped working. Inorder to book a complaint i used the toll free number and Panasonic company provided the service request number and promised to attend in 24 hrs. After 48 hrs and several phone calls to several numbers, I got the technician from Panasonic who was not willing to perform the service as the AC was installed by Vasanth & co and that supplier only has to take care of the service. My question here is that should the customer know this automatically that Panasonic and Vasanth & co dont have a proper understanding and i should reach to Vasanth & co for any service? Does Panasonic not have any responsibility to its customers? Why do you selll your products if you are not able to support them when required. Your service personnel are the worst. Ask them to talk to properly. I still dont have anyone attending my AC.