Looks like everyone is having the same problem. Super frustrating! I'd like to point out what was posted on the bitinstant blog on March 15th:

"To remedy this, for any orders which failed or did not process due to bugs on our end, we will honor the BTC exchange rate at the time of your purchase (bad for us, good for you, since the price has increased significantly).

We are also waiving/returning any fees associated with those orders."

I'm hoping they honor this statement with this situation.

Anyway, for anyone who's watching out there, here is my transaction info:

OrderID: e612c35a-9104-41d5-81ad-0c72550d3b62
EventID: 39cac3a0-7a0d-46f1-94d7-e3b87b263f78
DestAccount: 170806
QuoteID: 1e329422-d415-4748-91aa-4a75e668206a
User: SYSTEM
DestExchange: mtgox
eventtype: Order executed
EventSentAt: 1363652622.06
APIResponse: None
GoxCoupon: {u'error': u'Must be logged in'}
FundsSent: $192.02 USD


I hope this gets cleared up quickly.