incorrect pricing

firstly i would like to say i was absolutley disgusted by the way this issue was handled .firstly i have been a loyal customer of edgars for a very long time and have never given problems with my account so i do not be expected to be treated like they doing me a favour i received a voucher from edgars and when i wanted to use it on a jacket that was priced at the same price of the voucher at the stand where i got it from when i got to the till the cashier says that the price is 100 more than what it was advertised for so i refused to pay that price and mentioned to them that is misleading a customer according to the CPA they refused to give me the jacket for that price and said i must pay the price or if i want it for the price it was advertised for i will forfeit the voucher which does not make sense i was disgusted by the customer service i got and that they made it my problem that someone was to incompetant to do there job to change a stupid price such a big company should have a reputation to uphold but they are actually very incompatent and something should be done.