Complaint Review: us financial resources

I recieved a call from a man who said his name is John Miller and that I was approved for the business grant from the government and congratulated me . I asked if it was a scam and he assured me that it was not.

He then gave me information on how to sign in after 7pm the next evening to recieve the free 5.000 I was granted and I would never have to pay it back. I fell for the 3.87 one time fee. 

I am completely lost .....