You'd have to go there in person, they don't care much about having an internet or social media presence in my experience. Or know one of the electronics recyclers in the US/Canada that collect and ship the products overseas.

There's a whole street approximately here, if you were going there in a taxi you would ask for "bank road, saddar, rawalpindi" and then look around for the computer store.

https://www.google.com/maps/place/Bank+Rd,+Saddar,+Rawalpind...

or this side-street which is perpendicular to bank road, centered on approximately this latitude/longitude

https://www.google.com/maps/place/Bank+Rd,+Saddar,+Rawalpind...

at those google maps URLs, if you turn on satellite view so you can see the shape/size of the narrow side streets, scroll around a bit within a 500 metre radius and you should find at least a dozen things that are some variety of computer store.

Look up R2 or RIOS recyclers on youtube to get an idea of what it looks like in the US. Same concept, doing basically the same thing.