Flipkart — Fraud of rs 7384

I have purchased a laptop with order I'd OD[protected] at Rs. 39490 with 5%cash back means effective price is Rs. 37515.50. Without my permission and even contacting with me flipkart cancel my order and now the price of laptop is 44900/-. And I want to buy the same laptop either flipkart paid the differential amount of rs 7384.5. Or they provide the same laptop to me at the same price. Even without out for delivery they say that their courier service provider could not reach you despite multiple attempts. is this my fault. I Have also try to contact customer support and they call my with [protected] and hold my call to 38.02 min and disconnect it and not informed me clearly about it now all website best yearly offer period is end. So I am unable to buy this laptop so please solve my problem either provide me the same laptop at same price or the difference amount credited to my account by flipkart. It's a big fraud to show low price and customer not go to others online platform and after few days cancel order itself. It's not only one order my three order are already cancelled and not sure about other orders.