This question has a Best Answer.
Go to Best Answer
CONATCT ME FOR A PRE-CUT MICRO SIM THATS ALREADY TOPPED UP WITH £5 FOR YOU.
Quick and easy link, just displays on webpage! Click here to get the PUK code
Or you can dial 43430.
Note that if you call this number with your caller id withheld, giffgaff won't know who you are and will refuse to issue your pac code with a not entirely clear message about not calling from your giffgaff number.