DTDC Courier & Cargo — Taking photo without permission

My consignment came bit late though it was supposed to be a speedy service . But the packet was torn from outside, though the sender send the package duly packed.
I was more worried as the delivery man took my picture without my consent ..as I asked him why did he do that he reluctantly said, company policy.
I would like to know, how could you take someone's picture without consent, when alreay smile code n singnature given to the man. I feel Harrassed and Threatened. It is a case of breech trust and invading into my privacy .