what responsibilities does a stockier at Walmart have?
Walmart is one of the world's most valuable companies in the United States. I believe that a stock person would be responsible for obviously stocking, assisting with inventory and customer service. 
what do you mean by helping with customer service?
Customer service
Customer service is the provision of service to customers before, during and after a purchase. The perception of success of such interactions is dependent on employees "who can adjust themselves to the personality of the guest".
Customer service concerns the priority an organization assigns to customer service relative to components such as product innovation and pricing. In this sense, an organization that values good customer service may spend more money in training employees than the average organization or may proactively interview customers for feedback.
From the point
store. The 911 operator instructed one daughter to find an AED machine. The employee at the Walmart customer service desk did not know whether or not the store had one. Alberta law and workplace regulation does not require the placement of AEDs in businesses, and Walmart stores in Alberta in fact do not have them. An EMS officer stated, “To have someone survive an out-of-hospital cardiac arrest, the most important parts are . . . someone recognizing that there’s a cardiac arrest and starting CPR immediately,