Flipkart — Order cancellation from seller

My order keeps getting cancelled from the seller and till now there is no refund the amount is nearly 7500 for my 3 grocery order, and now i have no money to buy grocery. My 1st order was on 1st march 2022 and 2nd order was on 2nd march 2022
After taking order they are informing about cancelletion the next day, if there was no stock or whatever the reason they should have not placed the order in the first place. As a consumer what should i do?