[Resolved]  Flipkart — After multiple follow up did not receive refund in bank account

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Flipkart

Have purchased a purchased a Acer laptop on 16-10-20. and 21990 payment made by SBI debit card. I cancel this order on same day . Flipkart informed that refund will be added on my bank account till 19-10-20. But till, date refund amount not credited in my bank account.
1 Several time, i contacted Flipkart customer care via phone, Email and Twitter post. But my issue not resolved.
2. I also contacted, SBI customer care as per advice given by Flipkart customer care with provided Bank reference no by Flipkart but bank officials told that these reference no are irrelevant . Bank did not receive refund advice from Flipkart .when Refund will be issue then posted in your account.
3. I also provided latest bank statement to Flipkart by e mail and their twitter handle from time to time. But Flipkart only extending resolution time .
4. Almost 11 days passed, Every day, i am following Flipkart regarding this issue but still, refund not credited in my account.
I need immediate response from Flipkart in this regard .
I want to know, exact time frame when refund will be credited in my account.