Family Dollar complaint: Cashier short changing customers and not charging the advertised price

I went into this Family Dollar at this location. I was going to purchase detergent and 2 can Cokes. The detergent on the shelf was advertised at $15 and the Cokes were $1.15 each. The register rung the detergent up as $16.25 and the Cokes at $1.25. I told him the prices on the shelves were different, He said we haven’t changed the prices yet. i asked him to take the Cokes off. He rung up the detergent and the total was $17.83. He asked did I have .83 and I replied no. He gave me $2.10 back. I said you owe me $.07. He said that’s why i asked for the .83. I said well just give me my money back. He said you will have to wait until I get all my customers out. I waited until he rung up all the customers. I gave him the $2.10 back, he gave that back to me and gave me $17.85. I told him I was still short a nickel. He said I know I gave you 2 cent more than I was supposed to because I didn’t have any pennies. I told him you had already short changed me $.07. He argued me down that he gave me too much. I told him that I would be reporting him and he said he didn’t care. With attitudes like that, Family Dollar need to close their stores again.