Hi, I daytraded stocks 15 years ago, for 3 years. In any of the 3 years I didn't make any profits. So I thought I would not need to file a tax return. I had been fine until 2013, when IRS sent me a letter claiming I owe 2 M tax. IRS suspend my bank account and investigate my bank account history, only to find my bank account never had so much money, most of time there was only a few hundred, and never exceed a few thousand at any time. IRS closed the case as currently not collectible,but claiming I still owe 2M plus interest, and have to pay whenever in the future I have money. My question is: how can I make IRS believe I didn't make money on stocks, and didn't owe them money? I have asked some accountants but they say they don't know how to solve this. So who can I look for help?