Flipkart — Regarding failing to get order on time and failed to get refund

Sir this is my order id OD[protected] of flipkart on registered no. [protected].…...they promised me to deliver a ordr on time but flipkart fails to deliver it...again they given a new date...again they failed to deliver then i cancel the item...on 04 jan2022...and today 10jan2022...they have not issued a redund...what is this...flipkart is not able to deliver a order on time and not able to issue refund...