If you are a customer with Ethniki Bank
Then you probably had this pop up at your winbanking, Worry not though you can still use every other Greek bank for your transactions and just ignore Ethniki's Bank internal Policies.
It is weird for a money saving account to deploy monetary policies on your assets, money or investments, though
If I was you I would be ditching them for sure as those are some red flags of authoritarian ideologies, not something you should let in charge of your money lol.
If you still feel unsafe to hold your money in either Central Banking branch at Greece my advice would be to use Binance Exchange they are working with Visa and deliver a card that you can top up directly from your account with crypto.
But always remember, only store money in your banks for whatever amount you are willing to see being confiscated or frozen in the future. In shorts Greece is still a really dangerous place to have more than you are willing to lose. Do with that what you think is best for you and your money. Don't be the one saving the banksters once again, it happens once it will happen again.
I don't do a lot of posts about money and economics but this is something you should all know about if you are based at Greece.
That is all.
Keep it up