I bought a window A/C two weeks before, in Viveks, chenai, T.nagar. Still now i could not use it, as it is making some noise. There is no response from all the managers, as they are not picking up the call. I spend my hard earned money, to get this A/C which is Voltas. Now i am spending money on calling customer care and all the managers. But no proper response from any one. Please suggest me what to do . I am really frustrated with their service.