Here's a perfect illustration how ChatGPT improves customer relations. I bought an iPhone that I now don't need, and it's arriving today via FedEx. I wanted to know whether I should just refuse delivery, or accept it and then return it. Obviously it's easier to refuse. I asked ChatGPT and it gave me a detailed reply. Apple's chatbot saw it as a "technical" question and wasn't prepared to help. Sales support is one of those applications where cost is totally justified and economic. A human helper would cost a lot more I imagine than a LLM chat system.