"Sorry sir, we don't have ice cream", rinse & repeat.

McDonald's Garden Route Mall George. "Sorry sir, we don't have ice cream" should just be the main greeting the drive through box at this McDonald's greets you with as they were without ice cream 3 times in one month at different times of the day/week. If your machine is problematic then log a call to have it fixed. If you don't carry enough stock on hand and sell a lot of ice cream then it becomes pretty clear to carry more stock on hand which would boost sales in this rough economy.