Hitachi — not cooling of ac

Address:

Etawah, Uttar Pradesh

I have lodge the complaint no [protected] in hitachi service center but without solve the problem.it has been closed.again i have lodge the compressor problem.staff came and charging 500 rs. and take the compressor with gas charging cost of 2500 rs. but ac does not cooling still and again contact that person to solve the problem he again charging cost of 2650 rs. but still ac is not cooling and that person does not recieve my phone. I m very helpless. Plz help me