courier having a bad attitude

Order tracking nr BG9147.I ordered a parcel from baby company. Apparently the courier signed the delivery note himself and hooked my parcel on the gate. Courier came back today saying he thought he has done me a favour signing and leaving the package by the gate. I am staying on a small holding and anyone could take the package. It is gone now. He was arrogant and said he will give me the money. I told him if someone isnt home the package is suppose to go back to the warehouse. I already informed baby company also. The courier name is Pieter but he signed as Marne. This is really bad service