Glad to know you live in the neighborhood
I usually go to Suzuki Azim motors service shop in I-10, but these days I'm not getting enough time to visit them. The sounds in the front-left and left pillar were fixed by them but after 2-days of driving they are back. Today (Feb 26) they're offering a Free Checkup Campaign (General Checkup, door adjustment, A/C, Radiator, Head light, and Wind-washer checkup) as per the SMS I received yesterday. So I think after the campaign is over, I'll take out some time and get it checked again from them. I hope this time they fix it once and for all.
For other general noise issues, I still think I might check local shops to get information about who in Islamabad can help with sound deadening using let's say Dynamat or similar things.