with a random agent. You'll be put in line to talk with someone that deals more with your type of situations. Be up front, answer their questions and explain to them what your situation is now. You may be surprised to find that they're not as difficult to deal with as one might think. Whatever your situation there are many many who are in much deeper with the IRS.
They may set up a payment plan with you and it may start out very low. Whatever you do make sure and stay current with each year's taxes going forward. If you haven't tried calling them it may be worth it.
You can still always get help from experts - attorneys, acctnts etc. but they don't work for free.