Bad customer experience and untrained staff

I am extremely dissatisfied with the service at the Meadowdale Burger King, having experienced yet another frustrating incident. This marks the fourth time I have encountered issues due to the incompetence of the staff. It is clear that no one, aside from the manager, is capable of operating the coffee machine, and this lack of training or oversight is unacceptable. On my recent visit, I ordered a black coffee, but after a 20-minute wait, I was handed a frothy cappuccino instead. I immediately discarded it and went to McDonald's to get a decent black coffee. It is apparent that the regional and operational managers are either unaware or simply not involved with the ongoing staffing and training issues at this location. No one seems to understand what a macchiato is, and everyone claims ignorance about how to use the new barista machine. This is a recurring problem that needs urgent attention. Given the level of inconvenience and poor service, I am requesting a full refund for this experience.