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