Facing issue with my CIBIL score due to Flipkart Pay Later Facility mistake (Below is description)

The issue I have been facing this for a year now. And have complained to Flipkart Customer Support plenty of times, as well as with the escalation team at Flipkart. But they are not solving this issue. Please see below for a description of my complaint. I have purchased clothes and other materials from Flipkart using the Flipkart Pay Later EMI Facility. The amount was INR 15000, and I converted this amount into EMIs for a tenure of 6 or 12 months. I have paid all these EMIs on time each month to Flipkart, but Flipkart is not paying these EMIs to the lender bank, IDFC First Bank. Actually, whenever we purchase anything using the Flipkart Pay Later EMI option on Flipkart, it creates our personal loan account with IDFC First Bank. Due to the fact that Flipkart is not paying further to the bank, it's affecting my CIBIL score, which has drastically decreased. I inquired with IDFC Bank about these loan numbers: 54890451, 55309473, 51205804, 58522798, 74767486, etc. They informed me that I am not paying the amount of my EMI on time and that these are due on my account. This is completely my financial loss due to Flipkart Private Limited. I asked them to solve this issue last year and raised a complaint with NCH as well with docket number 3288316. After that, Flipkart assured that they would resolve the issue in 50 days and talk with the bank as well. But now, one year later, Flipkart has not resolved this issue yet. I need financial support from banks, but all banks have denied me any kind of loan. I am getting more frustrated day by day, because of my huge financial loss. I hope you will have some way out of this. Please suggest a law or section and how to file a case in court against Flipkart.