Report the vendor, hopefully that will result in some action, MP for BTC is the easiest scam on SR though, there are only a couple of legit vendors I have heard of for this service in the US, not something I am comfortable recommending though so please thoroughly research on the forums, surely there are safer ways of buying BTC in the US than MP via a vendor though?? In AU we can buy anonymously with cash deposit over the counter in most banks.