St Courier — Courier service refused to deliver at door step

I just got a call from ST Courier, Kayarambedu from a service person named Silambarasan stating that he won't deliver the courier at door step and forced me to collect it from the office otherwise he would send it back.
I get all my courier services done at door step without any issues so far and this service person is so commanding and rude simply called to collect from office.

Kindly do the needful to deliver the courier at the door step

Regards,
K Meenakshi Kalyani
[protected]