I had a similar issue with revolut - there is zero ability to contact them if you can't login to your account, after a week of abusing business sign-up to not get any useful response I filed a complaint with the financial regulator, within a few hours of them receiving it they magically called me and resolved it there and then. (I don't have a Twitter account or anything) Also, that complaint will stay on file and guides the regulator when reviewing licenses etc down the road so you should also file them as a matter of course- they would prefer social media because they don't have to answer to authorities about their behaviour.
But either way I don't use them anymore as they're just not reliable in a situation where you might be stranded etc.
But either way I don't use them anymore as they're just not reliable in a situation where you might be stranded etc.