TTK Prestige — Non stick tawa

We bought a non stick tava from Chitlapakkam showroom which turned unshaped after a month. When we approached showroom sales people they asked us to register a complaint with service centre in Tambaram (Majestic) They took the complaint and said will take 15 days to get a response from head office. We waited for the same and they called to inform me that they do not have a replacement product and asked us to pick from the existing other tava. This is totally a unpleasant experience from a company like TTK.