Sir I asked mechanic that is there any need to replace Clutch/Pressure Plates? He was like, "no there is no need to replace those", otherwise I too was very much concerned about that. I seriously don't know if he changed the gear oil or not because he took the car himself to some gear specialist/mechanic in Attock and handed over me after it being replaced (so chances are there that he might have changed the oil)
I will check out for clutch wire setting though InShaAllah