Seller doesn't seem interested on here or eBay. I paid £12 for P&P which I thought was about right for a 3 day delivery by Hermes based on Parcel2Go prices (£5.75 + Insurance + VAT - but i dont know if it is insured). As a comparison Yodel next day was £7.75 + Insurance + VAT.
You said you were happy with the delivery charge earlier ;)
And the date that it was collected is not the problem, as you say in your original post it's quoted as 12 to 14 days delivery - if the item was delivered by Hermes as it should have been (within 3 days of collection) it would have easily been delivered within the quoted time 12 to 14 days.
So unless the seller is ignoring you then I don't see how this is the sellers fault in the slightest (sorry, but I'm just going by the facts that you have told us) - it's the fault of Hermes, but it's now over to the seller to find out why you haven't taken delivery. So... if the seller doesn't find out why the item has not been delivered then you have grounds to be annoyed at the selelr.
But, as i said before, reading your posts - the seller doesn't apear to have so far done anything wrong so far?
Regarding P&P fees - it's a postage and packaging fee (not a postage fee), so the £12 also includes the cost of the packaging and the sellers time.
Anyway, was only trying to help - sorry for being nice.