Who delivered the Green Tea?

I had ordered green tea from Amazon on Saturday. And on Sunday I got the message that it has been handed directly to the customer, although I haven't received it. I checked with my roommate, neighbor and the security guard,  they were clueless about it.

Later, I called the Amazon Customer support team, they said it will take atleast 1 business day to check with the courier team. I called them again yesterday, they assured that they will get back to me on Tuesday.