Hi there,
I have been a gaming product trainer for a UK online gambling company for more than four years now. A part of my task is to train people how to play poker and different casino games. I also teach customer service representatives how to deal with gamblers over chat, email and phone calls. I believe having this experience will get the requested work done.
I'm not sure though whether you require your contractor to be in South Africa too to do face to face training sessions. If the sessions will be conducted online, then, I'll be perfect for your project. Feel free to contact me to discuss further details and I'll get back to you the soonest possible time.
I hope to hear from you soon. Thanks in advance.