Say an order from Haizenberg never arrived. He's known as a selective scammer, I would not recommend buying from him. The dispute button messages the mods but reply's are not happening with either the vender or the mods. What now? Coins still in escrow.
The vendor has a certain amount of time to prove that he sent, if he doesn't provide proof in that amount of time then the coins are released to you.
I'm not sure, but I don't think you are privy to those happenings so you just have to wait and see what happens. Also support on SR2 sucks so good luck.