Customer Service (WhatsApp) + Customer Service (Telegram). Mmb is a famous online entertainment in Australia. Mmb 51 likes. Mmb 51 likes. The revenue of a casino is an important factor. According to our research and estimates, MMB Casino is a smaller online casino revenue-wise. Customer Service (WhatsApp) + Customer Service (Telegram). Mmb is a famous online entertainment in Australia. . According to our research and estimates, MMB Casino is a smaller online casino revenue-wise. The revenue of a casino is an important factor.