What are the chances of a bank closing your account if you buy bitcoin? i have heard people say they closed down their bank account for buying bitcoin, but this might have been a few years ago. he only said they closed his account, there is no chance of them taking all the money in your account, correct?
Banks have their own and specific terms about that. Refer to the policy of the said bank.
And nowadays, it's not that the bank clients buy bitcoin using their cards that's why accounts are locked but if deposits came to that account are somehow become alarming, like a sudden big amount is coming regularly, it will be noticed and become a subject for investigation.
Just tell the truth during the process. Banks already know that bank accounts nowadays are being used for purchasing crypto unless they prohibited it from the start.