In any case, during perhaps hundreds of interactions with chatbots accumulated during many years, I have never encountered even one when the chatbots were useful, but they were always just difficult to pass obstacles in the way of reaching a human who could actually solve the problem.

To be honest, even in the case when some services still had humans answering the calls, those were never more helpful than the chatbots, but at least when speaking with humans it was much easier to convince them to transfer the call to a competent person, which with chatbots may be completely impossible.