Where do i go to file a complaint on a customer at a walmart store in spencer wva 25276?

im having a problem with a cashier at a walmart in spencer wva 25276 and iwant something done about it cuz i have complanded to the manger 5 times and nothing has been done. her name is sondra hazen and she has gotten by with harering me everytime i enter the store and im fed up with it