Thomson Tv — Utter LAck of Response for 3 months

Our voice activation for Thomson TV is not working since 3 months .We have been calling the support team but they have not come once to address . Today they called and said how we have to use it rather than coming .Another excuse is that we are not reachable .We are very much reachable by email and multiple mobile numbers .
We have also a 3 year warranty paid but no one is coming .There is no escalation mail available to bring them to book . Wonder how these unacceptable service people are duping enmasse and how to resolve

The product was purchased through flipkart .