Scammers: Hey guys we signed up with a Czech bank . Look we even made an official annoucement.
Czech Bank: No We Didn't. We don't know who the fuck you are.
Scammers: No No. The Bank is mistaken. We did sign up with them via some obscure card manager program that even the bank is not aware of.
All good guys. It's all FUD. We did not blatantly misrepresent the truth.

twitter screenshots you just posted says -
8 oct - CSOB bank denies signing such an agreement.
9 oct - Someone tweets and asks CSOB bank, bank support says they are doing their investigation in the related issues and will let us know soon.
I think its going good. Lets wait what bank has to say. done.

Because they have company named chain2pay witch have affiliate contract with another company and that company have contract with a bank. Now you understand how stupid is that twit in twitter? It's the same like you will call to the local shop and ask them is they are in partnership with some kind milk farm and answer will be no. Because they are in partnership with local factory and they have no idea where that factory getting milk. But farm can say that they are selling their milk in that shop. Is that enough clear?