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