Is anyone else missing their economic stimulus check?

I was scheduled to receive my economic stimulus check May 9th, determined buy the schedule that the IRS put out depending on your SS# and whether on not you had direct deposit. I have checked the IRS website and called the IRS hotline but they dont let you email questions or talk to real people. Most of my friends and famliy got their check on time or even early. I know I qualify for one because I got that letter in the mail couple months back that said I was getting one. Anybody else missing their check too ar anyone have any information on how to contact IRS and get answers?