I will second that Mr. Sabir's is non serious these days, after greats word for him by Xulfiqar on this thread, I happily i took my cultus 2000 to him, as his workshop is very near to my home, and susral.
His shagirds checked the car, while he was busy in small talk with a friend, then he after getting their input gave me an estimate of 16000 to 20000, stating that the compressor is all gone and needs replacement with a kabli one and it requires cleaning of all lines and many other things,which i don't remember after two years.
This was way out of my budget, so on my friends recommendation i took the car to Sanden support office at Shahrah-e-Faisal near nursery bridge, they checked the car changed the compressor (kabli one) and performed all the same things that Mr. Sabir had told, and the bill was just 6850/=.
The tools that they had, were professional grade tools and they used vacuum pump and the whole process was done in a very professional manner.
So the long story short I would not recommend him, due to my bad experience as he was too expensive, and better quality work was done in about one third of cost.