Sickening Bad Customer service @ Bopedi Complex Ackermans

In a month I went twice at Apel Bopedi Complex Ackermans and experienced bad customer service on both the occasions. First time I went I wanted to return a bag because the zip was broken but was told I must return it where I bought it. My second visit was even worse, I bought boots with a sale price of R180 and when I got to the till was told the boots are not on sale, it is R280 and there's nothing they can do. They all left me alone on the till including their so called supervisor.