POOR SERVICE AND INCOMPETENCY

On the 1st of June 2015 I went to Edgars to purchase perfume.I got to the till gave the lady my card punched in my pin then the machine died instantly.I received an sms that the funds were debited and my transaction successful,however i was yold that Edgars is not picking up the transaction on their system.I mean is it my fault that their systems are ****ed up.I was told to wait 3days then i would get a call. The goods are being kept @ the store but i payed. I mean Edgars is such a big store how can they not do regular maintainance on their systems, i'm really furious about this and feel it is no longer safe for me to shop in that store with my card. I mean that lady said this has happened before to another customer like really... how many customers must be affected for them to get their act together and deliver.All i want is my money back and i'll go buy the perfume @ another store rather.