very similar, I eventually got an email back from them this afternoon explaining they had issued duplicated despatch labels, of which one was duff.
Obviously I had been provided with the duff tracking number which was why I couldn't locate it.
I then tracked it using the new tracking number and it explained that delivery had been attempted (which of course it hadn't) and it was now being held while they contacted me (which of course they didn't).
Luckily I tried putting the USPS tracking reference into the royal mail tracking website and fortunately was more helpful and said the package was at my local sorting office (5 mins away).
So I jumped in the van, drove to the sorting office where they found the parcel using the tracking number, then they said we need to charge you £18 for VAT and a handling fee!!
Reluctantly I agreed to pay and presented my credit card (as I rarely carry cash) and they said sorry we don't take cards!!
I becoming now quite irritated, walked back to the cash point (which I had passed on route earlier), got cash, went back, paid and finally I have my adapter.
What a fiasco eh.
Fortunately my day was brightened when the axminster delivery turned up with my domino assortments and various cutters.
So all in all a frustrating and stressful day but I now get to play with the new toy (oops I mean tool) tonight