Cafe Vostro Menai - lately disspointing service.

Used to always visit vostros. But lately little dissapointing. Other than no air-con during summer, service has declined. Especially one paticular waitress. Not only does she get the,coffee orders wrong, but then insists, not once but several times that you're wrong and ordered somthing you didnt want? What ever happened to the customer's always right?