Despite note saying to leave with neighbour, YODEL dumped delivery behind a bin

I take in parcels for a neighbour opposite in Marshfield Road So Alcombe Minehead. He leaves a note on his front door that clearly states where to leave it.

Your driver came today, looked at the notice for a long time then pulled the Wheely bin into the gate and placed the cardboard box behind it. I saw this as I went to open the front door.

He then jumped into his van and sped away before I could speak to him. It had been rainy so much this morning I went across and picked up the parcel to stop the wet seeping in to the cardboard, this happened today at 1.40pm.

Why did he do this? I saw him reading the note yet he chose to ignore it.