Farringdon station.
(Human, "live") Announcers for both platforms repeatedly bellowing both of them at the same time meaning neither side can understand anything.
Passengers just standing there enduring a wall after wall of shouty incoherent noise. What's the point?
It's not an unfommon experience at other stations, either.
All this money on customer experience research... well here's an insight! Surely it isn't impossible for a simple cheap process to sort this out?