State Bank Of India [SBI] — Refund initiated by Flipkart travel but not credited

Sir, this complaint is regarding flight cancellation refund issue. Refund of rs 3507/- was initiated by Flipkart travel for my cancelled air ticket on 17 April 21 at 0315 hrs they informed me by sms and email. Refund was expected to be credited in my SBI account with in few days but more than one and half month have gone and it still not been credited in my account I sent many emails and contacted Flipkart travel customer care on regular basis, they provided me 23 digit ARN no for refund by phone call only despite my repeated requests for email for transaction ID
Refrence no they provided by phone is [protected] 7957 907
I sent email and contacted my SBI home branch but it proved of no help
All details provided in attached screenshots of email.
Please help me in getting refund credited in my account.