I think both guys are confused and not understanding each other.
There are no screenshots by the OP proving that the Middle man i.e Shazo Bhai was/is willing to take full responsibility in case of any mishaps.
Plus, even if the seller ran off with the OP's money, why is the Middle man to be blamed? He is the one who took time out of his busy life and found the item and got yourself a good deal, probably even a discounted one.
A mutual friend is looking for a Modellista kit- I told him that I would help him look for one ( Check my latest thread ) I found a seller on FB and tagged my friend. They are both dealing with each other, I did him a favour of finding the seller, why should I be blamed afterwards, except if I took the responsibility, which I luckily didn't.
What you both can do: Meet each other, have something to munch and just laugh it off.
Shazo Bhai offered you many free services and it seems like he really cared for you ( Btw, I don't know Shazo personally ).
Regarding his " Friends/ acquaintances ) backing him up, where is your proof that they are lying? I am sure they must've had a good experience dealing with him! Mistakes do happen and by even the most perfect people, it's not like Shazo Bhai has teamed up with Nasir Khan and is robbing everyone, do a tiny search and you can notice many people lost their money by trusting NK.
Take it easy, pray to god that only 3000-/ was gone, imagine if a bigger amount? Learn to forgive people. You will get revenge on the day of judgement, why are you so worried?
That's just my opinion. Next time, try to get deals done in your home city or if you do happen to travel to the same city by any chance, then get it yourself face2face.
I bought bulbs from Farhan's friend, who lives in Karachi. I paid in advance, got the item in 2 days. Imagine I didn't, I would never blame Farhan, it was up to me to transfer it or not- No one forced me. It's fun taking risks as long as you can play the game!