Sad customer

I had a very bad experience at Jet Dundee this afternoon, I bought some clothes and went to pay using a bank card ,I paid and payment approved,I received a message from the bank that the money was reserved for purchase then given a slip to sign,I did so and give it back to the cashier,immediately after that the cashier said there is a problem she needs to call her supervisor and she did so and the lady came look at the computer and said there is a problem with their system they can't give me my clothes that I bought,I told the lady that but the money went through and I even received the message confirming that, she rep**** saying that money can be reversed at any time ,I insinsted that I want my clothes she said I must pay again for the second time which I refused to do so,asking her what if same thing happens then she said she can't help me but I have to leave the clothes at the shop and come again after 2 days which I was very cross and confused about it and she didn't even shows that she cares and give some apology, I ended up doing as she instructed, left the clothes with them my money as well of which I dont know what to do now