Kfc Malmesbury : Drive thru

Had the worst experience ever at Kfc Malmesbury. The cashier at the drive thru was so rude. She dont have no idea about the menu and gave us wrong information. When we got to the window she still have the audacity to say " Go wash your mouth clean, if you people are being rude i will also be" as if we were. She do not have a clue about the products which are being offered