Thought I would post my experience on here. I sent 300 hundred through bitinstant with cash at a cvs on 4/9. Today i finally received my money into Bitstamp. Seth was the rep that helped me. I put a post here on 4/10 and then sent in a request through the contact page. After 4 hours, I received an autoreply.
I choose to patiently wait seeing how everyone was reacting here. I eventually got a response from Seth on 4/13 saying they had low funds and that once they had more funds in Bitstamp my order would be manually transferred. So that happened today. I am not sure if I will ever use bitinstant again as this process was extremely stressful wondering if I would ever get my money. I can understand the over-whelming use of their system with the sudden urge for people to get into bitcoin, but if you want to keep customers you have got to do something a little extra for them if your system doesnt work as it should, like not charging your fee or giving a discount. I work in customer service and know this very well.
At least I got my money. So any advice I can give people who dont have their money yet, just patiently wait, use their form and you will be contacted by someone and eventually get your money.