Terribly poor service!

I visited the ackermans and intended to purchase a white skinny jeans. The one I had selected had a mark down tag of R100 on it. I took it under the impression that it would be the price I pay but got to the till point and was charged the full price. The assistant went and got the manager on duty who never even pretended to be pleasant or cheerful. I explained the situation and the manager said that the tag was not intended to be on that particular pants and she therefore cannot reduce the cost for me. That was it! She offered no further assistance, never provided an apology and out right refused to charge me the price that the pants was clearly advertised at !. Extremely poor service !