little question to be made.

I have a doubt, will scammers will keep scamming here or there are any way to report them?
cuz it's not nice get our things stolen and see other people getting scammed by same guy over and over again.
anyways just wanted to know if it's possible to ban some1 from forum ( of course having strong arguments like screenshots and textlogs )

Get some evidence and post a thread with proof in the complaint area - and it will be taken care of.
And yes, with "strong arguments like screenshots and textlogs" we can ban someone for scamming.

But to make it clear for everyone reading this: threads like "omfg that bastard yxz has scammed me - ban im now!" without proof wont make us do anything, its more likely the thread gets closed.