Woodburn checkers

Yesterday I bought a cellphone at checkers Woodburn as I was in a rush I did not check the cellphone last night I finally decided to check the product and then I realized that the cellphone does not have the specs they advertised also I gave the cashier R600 yet my slip says R500 I will be returning the phone today demanding that they check their cameras and see why their cashier stole a R100 from me and Asking for a full refund since they are essentially false advertising will update accordingly after hearing their response. This