thanks fahad, you are right there are lot of dull mechanics who dont even know how to open the door and they hold a workshop!!!
@Elien: I have already serviced pads [YES! the mechanic said they are locally made], changed the brake fluid of good quality, even the brake circular plate [dont know exact term] was sent to lath machince operator to make that flat.
as I mentioned earlier that brakes work without pressing clutch, but with clutch, brake become hard even to press!!