Flipkart — It is showing shipped on app but not yet shipped by the seller

I bought a sofa ( Flipkart Flipkart Perfect Homes Porto L Shape Fabric 6 Seater Sofa
DIY(Do-It-Yourself)
Seller: RM HOme Sofa Manufacturer) on EMI. After the order was confirmed and payment was done, the seller started calling continuously telling me to cancel the order since they don't ship it to my location. I tried to cancel but the product was not eligible for cancellation and hence even after repeated trials it couldn't be cancelled. The seller harassed me to cancel the order. The item was then showing 'shipped' on 20th March on the Flipkart app and delivery was April 5, 2023. On April 04 2023 the delivery date was again changed to April 29, 2023. I want to cancel my order but the Flipkart customer care says I cannot. The EMI is starting to deduct money. Please resolve this ASAP or I shall take legal action against Flipkart and The seller