Maruti Suzuki — 50,000 paid and they cant diagnose the sound

please save me from the incapable illiterate mechanic workers from Durg, Chhattisgarh, Ganapti Motors...
have got my deep pocket exhausted because of inefficient workers. My chief complaint was the loud sound as soon as i turn on my AC, i was made to paid 19000 and later 25000/- but they sent my car back saying everything is solved. when i started the ignition and then AC, nothing was changed...they were dare enough to send my vehicle back.
i have paid 50, 000 as they said first its from engine, then they said its from compressor from AC...but they could not find from where the problem is from?
and they sent the vehicle back, saying its solved...such cheap prople of MARUTI SHOW ROOM FROM DURG, CHHATTISGARH, GANAPATI MOTORS...Such frustrating, illeterate workers employed.i will be shifting to INNOVA, god save such cheap people.
Dr Sachin B Mangalekar
KA-49
M-9966
mob:[protected]