I know someone who has recently been hired by Monzo to work on customer support. They paid for her travel to Cardiff, all her expenses and hotel costs so she could be fast tracked through the training process.
So from what I’ve seen Monzo are doing something about and are investing a lot of time and money to get people trained up as quick as possible.
I guess there’s only so many people that they can train up at a time, so while some are seeing no improvement I’m sure they’ll get back on top of it all soon