in a nutshell this is one of the main arguments against cbdc as the same thing can happen with them and in that case it ain't one bank, but all banks that can be turned off;

Banks have the ability to debank customers at a moment’s notice. Canada successfully weaponized its banks against the people during the Trucker Convoy, a peaceful protest demanding the right to bodily autonomy during the COVID-19 vaccine mandates. Lawyer Eva Chipiuk, who represented the Trucker (Freedom) Convoy, received notice from the Royal Bank of Canada (RBC) that her bank account is being terminated without proper explanation.........more..........