(Bug when I'm vending)

My ID : Cresentholic
I lost my item and my money. If I disconnect or So3d when I'm vending, I got my item has been sold before and come back in my invent again.

The example, I sell 1 WRS in my store. I see that already sold. But if i DC. WRS will be come back and my money back to first time i start sell. Now, I already have this situation 3 times. And very bad thing, i got item that i dont know where that come from.
Last time, I start sell with 2 WRS and 2 BRS and 690 million. I saw that 1 BRS have been sold. But, I'm DC. And after i log in back. Ta~~daa. now, I have 4 WRS and 2 BRS and 59 million. Please fix and bring my money back. THX