Banking customer here, not an investor.
I started an account for the sole purpose of using the debit card on an international trip. Opened the account about six weeks before, downloaded the app, received the card, and no other communication. Checked the app daily to ensure everything was ready for the trip. I should have tested it before I left, but I didn't discover the account was locked until I was making a connection in Incheon airport. No big deal, except I discovered that the 'contact us' in the app is only a bot. The app still shows no problems with the account. International collect number on the card didn't work. Finally discovered Skype works well for international calls. But the 'team' that needs to handle this is 9-5 Mon-Fri. Up after midnight to fit their schedule, I discovered that they've conveniently set things up so that I can never retrieve my money and they will never unlock the card.
Customer service spent the week alternating between politely lying about solutions and rudely talking over me while I'm trying to communicate how desperate my situation has become.
Not just the worst banking experience, but the worst customer service experience I've ever encountered.