Starbucks dealings with rude customers

I'm a former Starbucks barista – there is a universal trick we use when customers are rude & I won't say sorry for it https://www.the-sun.com/lifestyle/5131048/former-starbucks-barista-decaf-coffee-customers-rude?utm_source=native_share&utm_medium=sharebar_native&utm_campaign=sharebaramp