Refund taken for back taxes owed

It’s been 14 years and they still take my my tax refund! 
I called IRS last year and she was confused also as to why .. no payment plans were made to offset date. 
I was a stay at home mom at the time no job but my ex filed married joint and screwed me as he owed and never paid .. got divorced… and now they take my refund! There’s a ten year statute of limitations .. she said I needed to file a paper explaining what years I wanted back and my situation and it came back saying I owed nothing but they still take it! 
im so confused and thinking I need a tax lawyer at this point . 
why would they still take my refund after ten years with nothing ever filed for payment plans or to change date ?