I was shocked and very upset with the behavior of this Cashier named Farzana K. at Costco, Sunnyvale, when she insulted me in front of other customers. She called the manager and blocked our membership because I was using my Husband's membership card for the first time for the groceries. I never knew that you are not allowed to do that. But this lady not only lied that this is the second time she told me this but also insulted me by calling and warning me not to come to costco without my husband. Instead of saying it rudely in front of... read full review »