Complaint Review: US National Grant Department

I received a call today from a man who said I was chosen for a government grant for $7000, that some how I was randomly selected. I kept asking for more information but the man could not provide me any further details. I ended up asking for a manager to get on the phone. Instead of being transferred to another line...I heard men talking in the background and another man got on the phone stating he was the manager named "John Martin". I then asked for his direct line but he kept insisting that he did not know his phone number. I then asked the own manager of the company dont even know his own extension. He then kept asking for my routing number of my bank account. I did not give him that..and the call got heated and I ended up hanging up.
Please beware of this SCAM.

Kimberly
utica, New York
U.S.A.