Try live chat with them
They should be able to get the puk from your account.
You can try to reach Customer Care via phone or Chat and ask for the PUK code of any SIM Card that you will provide.
"PUK" means "Personal Unblock Kode" (don't ask why it's spelled with a K). It is a unique code that is used to unblock your SIM if you enter a wrong PIN too many times. They are sometimes printed on the credit-card-size carrier that the SIM comes attached to.