Disgusting attitude and behavior from a manager

What disgusting service from the manager at Telkom in Overport City. I purchased a phone yesterday without being informed that it is not android and not compatible with certain apps. Upon returning it to exchange for a different device the manager storms off while I am enquiring him about the process of returning the device. I've never been so belittled and disrespected as a customer. I fail to understand why he feels he has the right to storm off instead of explaining the procedures.