A couple of things...
he sold me a DX joker, with busted PERS eyes, refuses to take the figure back for a refund, or even offer me a partial refund...
I don't know if it was broken in his possession or not. As a seller, I would not sell broken goods. If it turned out a buyer claimed I sent him a broken good (that I know was not broken when I sent it), I'd be sore, but I'd probably offer at least a partial refund, to help him buy a replacement part. Take that for what it's worth.
also, the tiny safety pins for the grenade rig were MISSING.
Was the Joker taken out of the box and assembled before he sold it to you? If not, it's possible that the box originally was missing those pins, due to an error on Hot Toys' part - they're easy to miss, if you're not taking the Joker out to assemble and play with. In that case, it's not really HIS fault.
If it was taken out, though, then he should've known and made it clear to you.
I once sold a DX Joker straight from the box - he was missing his wallet/knife chain on his pants. I didn't know that at the time, since I just took it straight from the box, didn't think to check for a little detail like that, and it was Hot Toys' fault because they must have forgotten to include it on that specific figure - so I didn't realize until the buyer let me know, once it had arrived. The point is, sometimes things are missing and it's not the sellers' fault.
now i go to take his shirt off because im selling the billy b set it came with and i see that his suspenders are broken, i didnt touch them AT ALL. they were carefully laid over his shoulders and tucked behind his back.
There's no excuse for that - if he had swapped shirts, he'd have known about that (and probably caused it himself).
then i also notice the BONUS bank robber gun he included was BROKEN, and the stock is GLUED where it is supposed to turn on the hinge. try telling me you didnt know about THAT one RICEaRONI.
Ok, I'm not sure what you're talking about - but if there's glue on the little hinge part, that is NORMAL.
I've inspected several bank robber guns straight from the box - Hot Toys adds a dab of glue to the little hinges. Enough to keep the hinges from just coming out, but not enough to prevent the thing from swiveling in the first place.
and lastly, this one im not sure about, but looking at MAGLORS pics of the grenade rig inside the coat, shouldnt this have rivets? what the hell did this guy sell me.
Why would he have removed the rivets? That makes no sense to me - I suspect that's just normal variation in Hot Toys figures, and not his fault.
For instance, I've got two Bank Robber Joker figures - one with a brown belt, one with a black belt. This kind of normal variation exists, even between identical Hot Toys figures.
I'm not saying you didn't get a raw deal - the PERS story is fishy and there's no excuse for the suspenders. I'm just saying some of the issues you've mentioned might either not be issues (like the bank robber gun) or not his fault (like Hot Toys' omissions and normal variations). For sure, damn him for what he's done, but no more.