Rambling Rose charging for a slice of lemon

I have been several time to this restaurant and I have always been impressed with the quality of their food, prices, service and ambiance but on my recent visit I was horrified when I was charged R10 for boiled water with lemon. I regularly order this from every resturant and I have never been charged. I feel that this is really disgusting. In times like these when things are so expensive and competition in this industry so high surly you should be greatful for every client and find small ways to show your patrons that they're important. Charging R10 for a small slice of lemon in a glass of water you have already boiled for something else is ridiculous. If they insist on charging this please inform your patrons when they order! No one expects to pay for this so even if you put it on the menu...tell your patrons at the table!