Flipkart — Product not delivered/delayed

I have purchased some groceries from flipkart on 7th sep the order id is OD[protected] the order was supposed to be deliverd on 8th sep 2023 i waited for extra 2 mode days but the order status was same shipping. I tried contacting customare care number they have escalated my issue and i was supposed to get the resolution before 12 sep 2023 but it didnt happend on 12 sep 2023 i got a call from flipkart department asking me for my bank account details for the refund. I asked them to refund the amount to the source account from which I have placed an order yes they give me only 2 options either give me my bank account information or they will refund my money as a flipkart gift card. After going through all the difficulties how can I agree to get refund as a flipkart gift card, and about the bank details legally I can’t provide the bank account details to anyone. The call center agent will say that he will arrange a call back from his senior but it’s useless no one called me but i got a message saying they tried contacting me on my number about my order id and asked me to callback on this number [protected] again the same story starts only 2 options of refund or offering a senior call back its been 7 days i have already ran out of my groceries need yet my order is not delivered nor the refund is initiated.