I had a fun experience with my ISP where their chat bot couldn't help me (of course it couldn't, I don't call for "did you try turning it off and on again" problems), so it escalated me to a human agent. Said human agent was very obviously copy-pasting LLM output. I could tell because (1) the responses were nearly identical to what Claude already told me when I asked it before calling and (2) every once in a while I would get an uncharacteristically brief reply, without capitalization or punctuation, in Indian English.

I haven't a had a good experience since AT&T bought my previous ISP and forced me to switch to a different subsidiary.