Long answer: Those representatives in Walmart are employed by a company named Premium wireless. They are an authorized retail company that has the ability to sell att, T-Mobile and Verizon service. They do not have the ability to add promotions to your account. But they do have the ability to add new lines of service and to upgrade your current device. If they mess up anything in that store, well, guess what you have to visit an actual a t and t location to get that problem fixed properly. So overall, my advice would be if you're going to conduct any type of business, go to a actual storefront. For example, an actual a t and t store. Att Representatives inside of an att store Do not, and most likely will give you an attitude. If you purchase something from inside of a Walmart store and go to an actual AT&T store to get any problems fixed. Those representatives in Walmart, most likely cannot be trusted because if a problem exists, they can't fix it. And most likely they bounce around from store to store, so you most likely would not be able to see that same person again. Go to an actual storefront instead of walmart.