Very rude call centre agents!!!

Your call Center agents are extremely rude! I called to enquire about my cellphone insurance being cancelled. I had already cancelled it over the weekend yet I was getting messages from Vodacom insurance informing me of a premium increase. Not your call centre agent telling me not to have “selective hearing” when I told him that what he was saying did not make sense- How dare you Vodacom! Is this how you train your call centre agents to speak to customers??? It’s just that your network is stable other wise I would have left long time ago- such poor customer service! Extremely shocked!!!