Amazon.com They cleaned up my entire debit card Internet

I am a regular buyer from amazon. yesterday i bought 2 items from amazon.com. A corsair memory kit and a gigabyte motherboard. As the usual process was they charged my debit card for it and my bank sent me an sms stating the amount. After sometime i received another sms from my bank of the same amount of the corsair being transferred to amazon. i called them up and spoke to them about this. the moment i kept the phone my debit card was again charged for the corsair memory kit. this was really getting ugly because even in my orders it showed i had just bought 1pc of both the items. i called them up again and spoke to them about it. and as luck would have it i kept the phone and within 10minutes i was charged again for the gigabyte motherboard and i couldn't do anything about it. in all i have been charged thrice for the corsair memory kit and twice for the gigabyte motherboard. I called up amazon again to know what the hell was going on and how could they just keep charging me. all they had to say was it will take 24hrs to find out whats happening.

I don't know what to do now. anyone had any similar incident. I cant even call my bank and ask them to block the money as it is already transferred to amazon from my debit card.

I am a student with not much money in my account and they swiped out all from it. i would appreciate if someone could guide me in the right direction about this.

Sher
Dubai