Amazon India — cancelled my order without notification

Address:

Dehradun, Uttarakhand, 248001

Amazon india has cancelled my order without notification and not refunding my money which i paid through debit card. Every customer service representative saying that i have no information to tell you. What is the meaning of this.. If they have nothing to resolve my problem then why they cancelled my order? I called up many times but always they are saying wait for 24 hours i don't know when will their 24 hours completed? It is very disappointing to me.