Hydtelretailssales — Apple Watch SE/ gave me wrong size product and now not responding to my queries

I ordered Apple Watch SE on Flipkart and the seller of it is HydtelRETAILSsales. On 7th June 2022 received the product and found that the Watch size is 40mm and the band size is 41mm, which doesn’t fit. So I raised a complain on Flipkart and after 12 days they said your complain is rejected. Neither they are replacing or returning the product.