Dischem bad advertising

<p>We recently purchased purity that was on special at dischem at the pavilion branch in Westville, the promotion was 5 bottles of purity for R40 so we bought 20 bottles only to find out we had over bought so we returned 10 bottles upon returning the bottles they only credited us R57 some change. In all fairness if it's 5bottles for R 40 we shouldn't have got a credit of R 80 back. But they insisted that's how the promotion works. This is poor advertising and Robbing of customers.</p> <p> </p>