Mugg & Bean bad service

I'm again trying to get to get good service at a Mugg& Bean, which appears is impossible. I've called Famous Brands to complain about Mugg & Bean service at the Harrismith franchise with no result. I'm now at East London airport and against my better judgment I'm eating and apparently wasting my hard-earned money at the Mugg& Bean. Managment and the staff cannot understand the word "Melon" and are unable to offer a suitable alternative. The waiter is clueless, and the manager seems to be unresponsive to my request. Calling Famous Brands head office is a futile exercise. Famous Brands is just another corporate giant that does not give a **** about their clients, they take your money and that all they are good for.