Lynn is correct...you should immediately consult a real estate attorney. There may or may not have been a Realtor involved...not enough information given. But in the overal scheme of things, I'd be more concerned with the way it was accomplished.
It would appear that a quitclaim document has been executed with a forged signature, if neither you nor your husband have signed one or given a specific power of attorney enabling someone to sign on your behalf. Laws in diifferent states vary, but that would be the logical conclusion if it had taken place in my home town, Greenville, NC. The quitclaim would also have to be properly notarized here to be enforceable. See an attorney and it shouldn't take much time at all for him to follow the trail at the courthouse. It should all be recorded and on file, unless your state is radically different from mine.
Basically a quitclaim deed in Greenville, NC signs over any interests or ownership a person has, or may have, in a property. A real estate attorney will be able to advise you concerning your situation. Best of luck. Pistol Tingen