To clarify:
It was I that posted it to the correct address and requested the proof of postage. I clearly recall writing the address. The post office have either misread my writing or mistyped the number (easy mistake given my handwriting and that the numbers are next to each other on the key pad).
On scanning the proof of posting I have seen that the number is incorrect and it is me that has pointed this out to the OP. I have then suggested he knocks on at the neighbours house, whilst in the meantime I have put in a claim.
There are no issues, nothing sinister, no hard feelings between me or the OP, so whilst I’m puzzled at his airing this online, I haven’t refused to refund him or even hinted at this. Given I’m also out of pocket and have no way of telling whether I’m having my leg lifted (not that I think the OP is being dishonest in any way), my only question to him has been “what do you think is fair?”
Is that good enough for the STW baying pack, or should I be offering compensation for my loss?