Awful milkshake

Went and bought a Salted caramel milkshake medium.. I'm not sure what that lady served me,I even went to an extent of calling her aside and telling her that it's thee most awful milkshake I ever tasted, instead of her apologizing,she told me that's how it's done and even asked me if I've ordered it before as if I don't know how it tastes or maybe it was the first time I tasted it..In a very soft voice I told her to check her cameras,they will show that I always buy salted caramel milkshake medium, it's not the first,but it was the first I tasted such an awful one.I used to love it,now I don't anymore, I threw the rest into their bin.Money wasted 🤮