This attitude from Mbank is fcking ridiculous. Scaming is their own problem so either they or the gas stations with shitty systems should bear the consequences not honest customers. Locking all my cards out of the blue for no reason in not normal business practice.
Sent them a email and will see how it goes... Worst case scenario I will have to take a 600km trip to the boarder of Poland and visit one of that crappy banks offices. Does anyone know how many offices they have got in Poland ? By the webpage it looks like low cost unknown bank...