Flipkart — Phone delivery issue

I can order a oppo reno8 5g smart phone on 28/07/2022 but our convenience 09/08/2022 delivery i was fix but till now there is no delivery i called to customer care but they are told 13/08/2022 delivery will complete or otherwise 16/08/2022 complete so they telling different answers amount also paid to my credit card on emi basis but i am to pay emi 11/08/2022 could solve my problem as early as possible