Thats really an impressive story

my friend transferred money into my bank account, I moved it into a CEX to buy BTC for him... a few days later the bank called asking about my friend's transaction

Bank: can you tell us about this transaction me: what about it ? Bank: we need details? me: why? bank: we need to know me: why? its all legal Bank: was it debt from someone or a friend me: yes both and please dont call me again for such matters .... Im ok with closing my bank account Bank: oh no ... sorry to bother you!