$550 on april 3rd to MtGox account still not a dime nor response from BitInstant

I logged both order ids as according to URSAY(due to ZipZap's $500 limit) into their "system" two days ago and naturally, have not received a response, like I didn't before when I used their "live chat" interface. Wonderful experience with this company so far!

Seriously though, because this must be the shadiest business I have ever personally dealt with - where the hell do I actually contact people that care about my a. money and b. business?

I did essentially the same thing as the poster above last Wednesday in two separate MoneyGram orders (due to ZipZap only accepting $500 at a time) amounting to around $550. As I walked out of the place I performed the transactions, I already received two BitInstant emails saying the money was automatically deposited into my account. Cool!

Not... Week later, I have no money. I confirmed that the Mt. Gox account number that I submitted for my transactions is indeed my correct number, which puzzles me, as BitInstant shows the transaction as completed but my account reads $0.00. I have used BitInstant's "Live Chat" (LOL) interface three times and supplied Order IDs in each one and received absolutely NO RESPONSE at ANY point, including to the fourth (and maybe even fifth?) that I sent to the separate support@bitinstant.com address.

I'm reluctant to post all my details in public view in this thread, so I hope that rather somebody official from BitInstant will help me either externally or assure me that my details are of no privacy consequence. I really hope someone can help me, because BitInstant seems like a reputable company! But god, I have definitely had a bad experience...