Bad customer service from an agent

When u call a service centre to address an issue u expect to be treated with respect. But it seems a woman called Ntando at the ekurhuleni call centre was never taught how to do this. Why would any organisation employ someone who can call a customer's concern nonsense who cant even properly put the phone on hold when she is busy ranting to her fellow employees about how nonsense the customer is. I really hope the supervisor i spoke to will call this person to order and put some form of disciplinary action against them. I have never felt so disrespected in my whole life.