Hi,
try to provide as much information of the transaction here without any personal details. This way we are able to explain to you what exactly has happened. I'm sure there is a logical explanation to it.

It is possible that you have lost some money now but luckily it wasn't a bigger sum we are talking about. So if nothing else you will learn from this incident which will hopefully save you a lot of money in the future.

As the pronoun says: 'You either win or you learn'

Let's hope it is the former in your case after all.