When you bring cash to a bank office in order to open a deposit account, do they ask where you got the money from?
Sure they do. I have opened a bank account recently where I had to fill in details as to what my salary is on a monthly basis, what I think I will receive on my bank account from sources other than my job salary on a monthly basis, what my previous monthly saving amounts are, etc. All kinds of annoying questions. I sent a certain amount to this freshly opened bank account from the one I was about to close, and oh man, it took me 2 days to convince them that it was my own money that I have been saving throughout the years. All this because of all the Bitcoin related transactions in my previous bank account.
Things aren't easy nowadays. If you at the time of signing up for a bank account have stated that you expect to receive like 500 per month from different sources (other than from your job), but there are a few months that you receive far more than that, they will contact you where you better have all details they want directly, otherwise it can take days, perhaps weeks before they complete their investigation.
what? i can understand that a bank asks some questions if you handle big sums of money or have unusually big transactions that you usually do not have, but this sounds bad. do you have to answer them? i would consider to look for another bank.