There is a Taxpayer Advocate Service that is used a lot in these situations.
The Taxpayer Advocate Service is an IRS program that provides an independent system to assure that tax problems, which have not been resolved through normal channels, are promptly and fairly handled. The National Taxpayer Advocate, Nina Olson, heads the program. Each state and campus has at least one local Taxpayer Advocate, who is independent of the local IRS office and reports directly to the National Taxpayer Advocate. The goals of the Taxpayer Advocate Service are to protect individual and business taxpayer rights and to reduce taxpayer burden. The Taxpayer Advocate independently represents your interests and concerns within the IRS.
The following link will tell you a little more and also how to locate a local advocate.
Taxpayer Advocate Service
I hope this helps.