It's illegal in most countries to lie to bank representatives, all evidence can be used against you (statement when arrested) -> ergo so can those bank conversations.Gathering of evidence instead of subpoenas. The Dutch do this often. They are sneaky. I have seen them do it to people I know who live in the Netherlands.
For example, anyone that asks me for info, I tell them to go f*ck themselves. I did it here with a service provider who wanted to know my net worth and my taxes and whatnot. F*ck that sh1t! It ain't nobody's business. I'll die on that hill! If they want my info, they can come and try to get it... it will be a one-way trip