Bad bad service

Good customer is so essential and I had the worst experience on 08 January 2023 at Starbucks canal walk the one located in checkers. I was not greeted by your employee when I approached the desk I was not asked if I wanted anything else and I was shouted at. And was told “not to make my problem their problem”. As usual I had my weekly Starbucks cappuccino with hazelnut syrup this time I approached the employee who was about to scan my voucher fnb voucher just as she was done she walked away without asking me if I want anything else she just stormed off I then told her she should add the syrup and let me pay the R7. She then proceeded to tell me in such a rude manner I can’t add anything else now I demanded the syrup to be added as she walked off before I could say anything else! She then told me I could go off and complain with the manager right after I told her she doesn’t know how to speak to customer and it doesn’t seem she wants to work. I have never experienced such bad service in my life it was so bad that i left my coffee there and went to the main store in canal walk. Where I got my coffee and proceeded to give it away as I could not allow myself to enjoy it. The service I received was so bad and I would never recommend or boast about Starbucks like I did before it has given Starbucks such a bad name and in my opinion i feel so disappointed.