HELP!! Withdrawal of Retirement Funds

I withdrew funds from the retirement account. When I went to a bank office, I was pretty much forced to put into an investment account. I just wanted to get out of there and thought I'll just withdraw it from there. So, I did. Now I got a notice from IRS that I didn't file my tax correctly. Does this mean I will tax twice for the same funds!?! I'd appreciate your responses!!