Cash Net America Sharon Tax return hold Internet

 I received an email from sharon@cashnetamerica.org stating:You're Behind on Bills You have bill collectors hounding you, you can at least rest easy that the IRS won’t hand your check over to most creditors as garnishment, however we are holding on to your Tax Return for the moment, unless you clear the two outstanding bills that are going to judgment. You have any questions, email me back. Cash Net America I have never ever had a loan or any type of bill from any company with this name and the fact that they stated that they are holding my tax return is this legal. I've done web searches and can't find anything about this company. There is a cash net USA but not America and if you try to go to the website listed in the email address it is not found and this email has no phone number or address so what the hell do I do? Could they be holding my tax return or is it highly unlikely.