What would you do in this situation?

You went into a shop and just browsing the merchandise. You saw the shopkeeper is very polite to one particular customer. Saying "good afternoon sir, can I help you" blablabla. However, this shopkeeper is very cold towards you. Even when you are standing face to face with this shopkeeper, he just standing there not saying anything and not offering for assistance. This has nothing to do with your color. Suppose you are the same color with the other customer. What would you do in this situation?