I closed my small residential remodeling company 3 years ago.

Here's the bad news. If your company was a sole proprietorship, it exists today, as you and teh company are legally the same person. In other words, they can sue you, and, if they win, garnishee your wages, seize your bank account, and attach your home, car and other assets.

If the amount is large or if you have a lot of other debts, bankruptcy could be a route to consider.