Hello Player37!
I'm also from Austria and maybe I can help you.
Amazing that the bank is causing you problems, you rarely hear that.
May I ask which bank you are with?
Bawag, Bank Austria, Erste Bank, Raiffeisenbank, Volksbank?
So on the face of it and thought I would suggest that at every casino you should void the withdrawals (if it is still possible)
otherwise the money will end up back at the casino if your bank declined it.
I would recommend that if these casinos offer Skrill, you create an account and request withdrawals via Skrill.
You can order a credit card via Skrill for €10, which you can then use without your bank noticing anything about the transactions. 🙂
For example, you withdraw your winnings via Skrill and then use the Skrill card to withdraw those winnings.
So your bank doesn't know much.
If they don't have Skrill let me know what payment methods they have so I can help you further.
There is a solution for everything, don't worry.
As for your bank, I would take it seriously, as you know how strict they are with finances in Austria.
You could talk to your advisor, but if they were to send a message with a reminder, I would personally try to disburse the funds elsewhere before I seek the conversation.
I can imagine that some payouts for your bank come from dubious providers, which is why they cause you problems but this is only a guess.
If you have any further questions, please do not hesitate to contact me.
Best regards