[Resolved]  Flipkart — without my permission they cancelled my order

Order id - od[protected]
In diwali offer i buy a product at ₹9899. Without contacting me they cancelled my order, when i contact flipkart they suggest me to reorder same product which is now at ₹13499. I said them that i haven't cancelled my order but they are falling to provide me proper service.
When i ordered my product then expected delivery date was 7th nov 2019 but today 8th nov 2019 they cancelled my order with contacting me today i called flipkart helpline number they said that delivery boy called you but your number was unreachable. I said i have given alternate number he can call me on another number, they unable to give perfect reason for cancellation my order. They only say reorder same product at₹13499. They only cheat us. I said them provide me same order at ₹9899 but they said you have to but at current rate that is ₹13499. Please help