1-800-829-0433. Anybody who suspects or knows that a business or individual is in violation of the tax law can order a form #3949-A, called a referral form, at the aforementioned number.
You can earn up to 30% of the bounty!
If you know the Follett family has been, for example, mis-stating inventory knowingly - ie, not taking the write-offs they should - it's fraud.
I've been away too long and wasn't privy to the actual financials - like some IT and Finance folks there today are.
Don't be a fool! Collect if you can.