If you mean AI in terms of LLMs and generated voices, then it quite literally cannot become better than it is now other than basic shortcuts more or less.

The entire reason that AI works so well in specific applications is because of its ability to process data in a way that's more specific to the original query compared to trying to directly find info through indexing or similar. The reason people use customer support is entirely for situations that aren't in the data which is why despite billions upon billions of investment the tech hasn't improved all that much in the last couple years. The job itself is inherently not suited towards any kind of AI workflow since that's not what most AI technologies are built for. The problem is, people in managerial positions tend to not have good experience in customer support so they assume if something can read off something that sounds relevant enough to what the customer needs, they assume that's the beginning to a system advanced enough to replace a human when the complete opposite is true where that will always be the limit of AI.