Flipkart — Flipkart Pay Later EMI all dues paid still received a Legal Notice from IDFC First Bank

I have ordered some household items from Flipkart in October 2021 worth 6986₹ through Flipkart Pay Later and later converted it to Easy EMI which is converted to 3 EMIs of 2329₹ and I Paid all the EMIs timely before due date i.e. 5th of each month and all EMIs paid on 4th December 2021 but to My surprise I received a Legal Notice from IDFC First Bank stating I'm not Paying my EMIs from last 84 days and I checked the same in IDFC Bank site and it's showing the same, then I checked my CIBIL Score and there's same story. Flipkart Not settling EMIs timely and for their mistake my CIBIL Score gone bad and I got a Legal Notice so for this issue I contacted their Customer Support through Call and one of their representative lodged a complaint and said I'll receive a callback regarding the resolution in 48hrs but after more than 72hrs passed no response from them. So please Help me to resolve my issue and Close my Pay Later account