I had a decent experience with a service recently that used a ChatGPT powered support agent, it couldn't deal with my situation but I was surprised by how quickly it knew its own limitations and handed me to an actual human who helped me out.

Edit: The chatbot in question was not powered by ChatGPT a few months ago and it was pretty bad, a few canned QAs and really weird loops to get to a human agent. Before that the same service had direct human support. But as someone who has worked in a support capacity myself I will take the nice middle ground with a decent LLM that can quickly dispatch me to a human agent should it not be able to solve the issue.