Disgsting Customer service

I purchased items from FLM Sunward Park on 25/11/2015. The cashier was struggling with the card machine,it kept asking for override.Eventually after 3 times the payment went through.There was another gentleman there and i asked him if it wont go off my account more than once & his answer was \i dunno". Anyway I got home only to see that it had in fact gone off 2 times.I went back to the store to the same gentleman who then took me to speak to Dean who needs to learn a bit of customer service manners.He advised that it can take between 24 hours to 3 months for the money to reverse back. I am indeed fighting with the wrong people because they don't have the money. I must go to bank and ask them where it is.When i mentioned about the cashier struggling i got told \""why did you keep allowing it to be swiped then'??? This is absolutely disgusting customer service and I really dont appreciate his sarcastic \""im sorry you had to come back\"".An email was received today from him to nomad requesting that they check accounts.I feel he should try pacify client by advising \""if money is not back in account in 24 hours pls come back\"" not \""you have to wait"