Well as I have always learned NEVER EVER pay someone before they give you what your asking for. The only way you could do this is if you were using a credit card as you could get it refunded but never do this with cash, robux or anything pretty much. If you have there username and tag you could keep it and see if they reupload there acc back. They mostly would just make a alt and scam others but thats kind of all you could really do.