Uninformed & terrible phone manners at call centre

First of all, it is almost impossible to find the telephone number for Takealot's call centre. Secondly, the call centre agent has terrible phone manners. The agent had no idea how to solve my problem (a product exchanged with another product) and had terrible English language s****s, completely inappropriate to a call centre. The response I received is "Uhhhmmmm.... like... like, you want to return something?"

After 15 minutes I finally asked to talk to the supervisor and was told that the supervisor is busy and will call me back. I have not received a call yet...