Onida AC Model-GZ 1.5 ton
AC not functioning

I have purchased ONIDA split AC two years back. This is my third summer I found fault in my AC, which is not cooling.

Complaint- 1- up to 20 deg it was cooling well. After 20, only fan was working. Complaint lodged in Onida service station (complaint No-3, dt-21-03-11) Ph no- 0663-2404871, to Mr Panda, who sent two men for

repair. They billed Rs.2500/- (twenty five hundred) telling Gas filling-Rs.1400/- capacitor change (old one)

Rs.800/- service chage Rs.300/- . After reminding and ringing many times no body turned up and the problem still persists. Kindly suggest.