That looks like my only recourse of action as I've tried all other outlets of resolution. This is ridiculous and I make sure I post warnings whereever I can about this company
This is the kind of proof I'm talking about that I just got directly from Moneygram. Just follow the instructions at the link I posted. Also I DID NOT have my username on this MO, however ALL my verification documents matched up to the exact same info on these MOs. Keyur suggested I cancel the MOs however you CANNOT do this if you have the same info for who cashed it out as to who you're claiming DIDN'T. Moneygram called that fraud, therefore I was forced to take this route because of what they told me on the phone. You can verify all this with them directly. Below is the image you should expect, I blocked out my personal info for safety reasons. (this is just one image of two MOs I sent)
http://www.freeimagehosting.net/newuploads/zm5qg.jpg