Reliance Resq — no response to your queries

Our voltas ac is in insurance from reliance resq. Its around two week of our complaint to them that our ac is not working propoerly. But even after calling customer care for too many times. I always have to listen our employee will contact you today. But no one came till today. Now the situation is this they just say that your query will be solved today. I am calling in customer on daily basis but no respond to it. Even i have sent a complaint mail to their email i'd but i didn't get any respond from there too. I request you to take some action that they do respond to our query and solve it and not to do it again