methinks, 3d secure might not always appear (it doesn't always when i pay council tax online) and might be the reason why its gone from your bank, as it gone from your bank pnb must have it.

i only ever had one problem with pnb, i sent the misses a lot of money once and she didn't get it, the money had gone from my bank, and i phoned pnb they claimed they never got it, my bank told me they must have it, after getting messed round for a while, the bank told me they could put a trace on the money, i told pnb that, and guess what they found it , but the credited my misses bank account twice, but took half of it back b4 the misses could take the lot

anyway if you don't get an email response from pnb, can someone in the UK phone them on your behalf or pretend to be you or get a cheap international calling card