any tax for those 3 years?
2. even if no tax liability for those three years, you will pay late filing penalty!!
But per IRS notice, you owe them tax!!
solutions:
1. file those three years tax immediately.
2. pay them what you should.
I guess you can find an accounting firm to do that for you because it is a little confused for you for the interest and penalty(filing panaly, late payment penalty.. etc)