Call centre agent RUDE

I called telkom sales department to follow up on a litbox that I was told I would recieve when you upgrade to Unlimited home 10mbps. The agent had me on hold for most of the call , told me she is checking on her system when all i heard was her talking and laughing to someone next to her. Never helped me in anyway told me I already have a litbox and then says "so you expecting another one now" . When I was told by another agent who helped me with the sale that I would be receiving a free litbox. I'm so disappointed in the service. Telkom needs to give agents training on how to deal with customers because clearly some of their agents phone etiquette is pathetic.