Vodafone PUK? (Hamburg)

Hi all,

Can someone share with me what I should do?
While on a trip to germany, i obtain a prepaid callya vodafone number. After leaving Germany, i swop out the simcard to another simcard. Now when I switch back, i was ask a pin, which i tried the defaults like Protected content 1234. Now the card is blocked & asking for a PUK code. How can i get the PUK code if i am still currently travelling? I.e. calling the local vodafone rep is not gonna be possible. I do not have the original documents that came with the sim card anymore.

And how long can i 'keep' this number? Until i am able to head back to germany to "resolve" this, since i am still travelling. I have about 50 EUR worth of credit inside.

Any notes & tips is helpful