First Flight Couriers — They are saying that they are not gonna deliver it.

Address:

Gurgaon, Haryana, 122001

Hello sir i am from gurgaon. I received a call from your delivery boy yesterday. He was asking about the landmarks near to my home. I was not at home and i told him about the main landmarks. And even after talking to him i called my mother to come out of the house so that he can see her and recognize. But he didn't come! He called my twice and when he called my the second time he said " so can i deliver it at my home"?. He after that talking with a very abusive language. I even asked my mother and she said i am standing outside but here is no delivery boy i can see? The delivery boy said i am not gonna deliver it now and you have to pick it from the office otherwise i am sending it back.
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Is it any kind of bluff?
Pls sir take action fast. It contains really important things in that.
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The delivery boy's number was:- +[protected] i don't know his name).