I was able to chat via messages in-app. But each time I did, the support person asked me to upload photos of supporting documentation to prove my own other bank cards were in my possession, that sort of thing. I duly did so, and then there would be acknowledgement followed by silence at the other end for hours. Eventually the person would log off (their status is visible) and the system would show that it was "waiting" for someone to become available to handle my query.

That "waiting for someone to become available" would typically last some 6 hours or so.

Then I'd get someone, and we'd go through another loop, going nowhere, and them going silent on me.

I read somewhere that this can go on for a week or more, which had me really worried because I'd put in about £1000 just before they locked the account, which I needed sooner than that.

I also read that their Twitter and Facebook teams are much more responsive than their Customer Service.

So I reached out on Facebook. Someone replied quickly that they'd asked somone in Customer Service to deal with my query, and... my account was unlocked about 15 minutes later.

So, all credit to Revolut's Facebook team....