Call centers these days are staffed at the bare minimum as is, adding an AI bot in front of that doesn't really change that fact. At least for me, it's now a regular occurrence that I'll slot a quarter to half an hour of holding time when I need to call support. Local and small companies are better in this regard, there you can usually reach a human pretty quickly. Big international corporations however are a lost cause. Funny, given that they'd have the most funds available to keep their customers.