Getting Garnished for Child Support and I have NO children?

I just noticed on my pay stubs that I have been getting garnished for child support, and I have NO children whatsoever. I live in Michigan, and my employer has taken a total of $234 out of my pay for this garnishment so far, what do I do to recover the pay that I am owed and prove that I should not be getting garnished ?? This has been going on every week all the way back to late March. What are the laws regarding a wrongful garnishment and will I have to hire a lawyer for this? I fear that would be more expensive but I am not in the wrong and shouldn't be out a dime for my employer's mistake. HELP!!