A few observations on this.
First, it’s impossible to get a handle on how big a problem actually is by judging the number of grumbles on a company’s community forum. It’s a hideously distorted sample. People don’t go running to the community forum to report it when they have had a successful transaction. I’ve had cause to use the in app chat perhaps half a dozen times, for example, and it’s been a positive experience each time.
As much as people here would like to believe they know the company better than the company does, we really don’t, and Monzo will likely have data on the relative success levels of the in app chat that probably looks very different to the community forum perception.
That’s not to say the service is perfect and doesn’t need work, just that it probably doesn’t need the overhaul it might look like from this position.
My main issue is how difficult it is to find it. I get the desire to get people to self-serve, but I’m not sure their FAQ knowledgebase thingy is currently detailed enough to enforce its use, certainly not in my experience. I also personally always prefer the carrot rather than the stick in customer service… find ways of encouraging use of the FAQ first rather than hiding the in app chat (for example if the stats back it up, say something like “90% of enquiries are resolved in less than 3 mins using the FAQ” at the initial point of service).
I also personally think good customer service should be seen as a financial investment in much the same way the fancy and expensive devs they have building the apps and background systems are. Encourage self-service, but when people choose to interact with someone via the chat, they should be immediately faced with someone who can independently deal with the vast majority of issues. Investing and improving that would still be cheaper than switching to a phone line system for example.
Finally, I absolutely loathe phoning somebody up to deal with a problem. Navigating complicated menus, sitting in a queue for ages and ages and ages. If it’s going to take an hour to resolve my issue, I’d much much much much rather that was via occasional chat messages that pop up from time to time while I’m getting on with my day. And in fact, I’d rather it took all day via occasional chat messages rather than spending an hour on the phone - there would just need to be a solid triage system to ensure people who have urgent issues are dealt with quickly.
I think the previous response is also right about managing expectations by changing what it’s called so people aren’t expecting an individual’s undivided attention in the same they would have with a phone operator.