Clicks Olivedale - poor customer service

Clicks Olivedale. I was purchasing 3 items which should not have cost more than R150. When I went to swipe my card I noticed that the payment was R333. Whilst looking through my slip I noticed that an extra amount was put through for R149. The cashier and her supervisor both said it was the meditation because there were 2 items. However medication was sealed with a tag that stated R94. They tried to say ut was correct. Another staff member came and said that it was incorrect and gave me the refund. I can only imagine how many other customers who don't check their slips are being ****** at clicks olivedale. I honestly felt that if the staff really needed extra cash she should have asked me for money I would have helped her. I don't appreciate being duped.