Tried to cash out chunk of my BTC just to be hit with bank account freeze

Hi guys, i'm in a bit of a tough spot: i've tried to cash out near enough $100k of my BTC stash through a well known exchange only for my transaction to be stuck and my cchase bank account to be frozen. The bank hasn't been helpful at all, getting no real answers and feeling like they are avoiding my questions. They asked me for an AMLbot report, it came back 87% clean, which should be good, but they are still holding my money up.

Trying to find out how i can take this experience to an end faster. I see people really are having a hard time lately to cash out any decent amount of their funds, and it really left me thinking that it beats the initial purpose of crypto lol, not to depend on banks