@ Xulfiqar...Thanks a bunch for your valuable input.
Yes i have shown the car to 4-5 mechanics and all of them say that the compressor is now seized and i need a new compressor, condensor etc. Yesterday went to Punjab car AC and the bill for the the whole work is 47,000 for the new compressor and 32,000 for a used compressor. ...sigh... Now thinking about what to do as both the estimates and way beyond i was expecting. When i do gather some courage and go for this work, what are things that i need to be aware of? Which gas is to be used? How do i make sure that the gas being filled is of genuine quality? Should i go for a couple of AC mechanics (small shops) who have given me estmates of 15-16000 Rs. One of them is actually saying that he will give me guarantee for the whole season that the compressor will work. How do i make sure that the oil is never too low again? Any other options ?
All opinions greatly appreciated.