The worst Starbucks ever - Rosebank Checkers

The worst in my entire life is the Checkers-Rosebank Mall branch, No sweeteners? and when asked if they could help, attitute, attitude, and bad attitude. They could've simply grab some from the store? People aiming for healthy living and diabetic people can't consume sugar, Starbucks, Please work on training your staff. I've been treated like hell when tried to set the logic of WHY A COFFEE SHOP NEED TO HAVE SWEETENER.