Website crash/Order cancelled by iStore

I placed an order last night and made the payment, bur right after making payment the website appeared to crash. The website didnt work for the rest of the night. The following morning when the website was working again I saw that my order was unsuccessful due to the crash. However my bank had already reserved the amount on their side. My bank told me that they are unable to reverse the amount and I would have to wait 7-14 days for the authorisation to lapse if iStore doesnt debit the amount. I called iStore call centre twice. On the first call the call got cut while I was waiting for the agent to look up my order info. On the second call the agent told me they couldnt help me as I they couldn't uncancel my order. I now have no wait 7-14 days to get my money back and to be able to make my purchase due to a website crash which was not my fault. This was my first time trying to buy from iStore. This really ruined my enitre experience.