Voltas — not gaining warranty commitments

Address:

Mathura, Uttar Pradesh

i have complained for repair of my aircondition which is under warrantee then authorized voltas service centre mechanic came and take AC's parts(compressure) to their service centre after 1 week we contacted service centre then they gave back AC's parts to us and said that now we are not authorised service centre from voltas then we contacted to other service centre but their mechanic came and after ensuring the problem he said the compressor was physicaly damaged by the first machanic who opened it firstly for repair...
so my request is that please shortout our problem because fault is done by compnies service centre machanic