I earned a rewards card where I am only allowed to use at certain stores. Today I wanted to purchase gift cards. The amount was more than what was on the card so the manager Tanisha offered to call the merchant. After waiting 20 plus min. She decided not only could I not purchase my gift cards , I couldn't use my reward card at all. I can't believe they have the authority to override programs set up to reward their customers. I also can't believe how she decided to treat me like criminal. I will be writing to their corporate office to let them know that the program they have set up with GM is a total waste of time because of the untrained staff they have at the Henderson, NV store. The merchant she spoke to the second time even told her to call the number on the back. Tanisha's ignorance is something I've never experienced before and I hope if you encounter her , she will have received the training she needs to be more helpful.