well, you could just verify. I don't see why this is such a big deal honestly. If youw ant anonymoity, then you will need to accept that you will have problems with exchanges.
I have very well explained in my post why this happened, and how they did the "little trick" with their "general approach".
I already got in touch with one of the employer from their PKO BANK POLSKI SA, I will verify with and only with the bank if needed. I will keep you guys updated.