If you want, you can see if the IRS Taxpayer Advocate Service will assist you. They may at least be able to find out the reason for the delay and what the roadblock is.
They are especially prone to help if you have an economic hardship, or if there have been continued delays with lack of info from the IRS. At the following IRS website, select your state from the dropdown menu, and it will give you the number of your IRS Taxpayer Advocate. If the Taxpayer Advocate can't/won't help you, ask them to transfer you to an IRS agent. A couple of users reported that at least for them, that was a backdoor route to the IRS.
http://www.irs.gov/uac/Contact-a-Local-Taxpayer-Advocate
Also see this article for more info on how the IRS Taxpayer Advocate Service works:
http://www.irs.gov/taxtopics/tc104.html
