Why are chatbots designed to conceal their identity?

I’m not that good of a programmer, but even I can spot crappy programming in every live-chat popup on corporate websites. They repeat the same phrases, they ignore all information I supply that was not a direct response to a question, they ask questions that I already gave them information about, they repeat the same phrases, they ignore my request to fulfill a captcha, they don’t understand jokes, they repeat the same phrases….

…then they say “I’m a real person”

I don’t mind chatting with a chatbot. I HATE being lied to. I REALLY REALLY HATE when lying is automated.