double charging

I went to clicks to get some toiletries. I paid with card, it declined twice. On the third try it went through, but when I went on my internet banking I realized that payment went off twice, so I went to management and she says that they need to send it to head office and then they will do the refund. The security claims that it is my banks fault and I should wait a little, and that it might be paid back. So I go back the next day to tell them okay, i've waited 24 hours and my money is not back into my account. The same manager from the previous day tells me that she will keep me updated if she hears anything about the refund. It's been 4 days now, and I still don't see my money back in my account .