Dear Sir, thank you for your mail. In reference to your message and inform That mBank blockade put an authorization on your card.
Due this Terms of prepaid card 'issued by mBank SA paragraph 39 bank can put an authorization blockade or cancel card for security Reasons.
This unlock your card please visit mBank branch with your identification document.
You can find mBank branches with this link:
http://www.mbank.pl/o-nas/kontakt/lokalizacja/