Post office Sonipat Haryana — Delivering my post to somebody else

Address:

West ram nagar sonipat

I am Himanshi mehra resident of west ram nagar
and This is the second time that my courier is delivered to somebody else and somebody else had opened it.
Actually when I recieved it was unpacked and opened by somebody else.
The post man who is appointed to deliver the post in my locality delivers the courier to somebody else and this is the second time he did so
It's my humble request to please take action against it because it is against ethics to deliver someone post to any other person and the second thing I want to clarify is that my courier is opened by somebody else before I received it.