State Bank Of India [SBI] — Refund processed by Myntra but still not received (Refund not credited in my Rupay Utsav Card)

Sir, I had returned a product worth Rs1847 & ₹959 on Myntra for which my refund was processed on 29 Dec 20 & 12Jan21 but even till now the amount is not showing in my SBI Rupay Utsav Card ending with 1207 (which was given to government servent with ₹10000 preloaded balance as festival advance which wil expired on 31 Mar 21 so no Account no was registered with this only a utsav rupay card was given for transaction).Myntra has successfully processed the refund as they provided me the refund reference number(17203010365052633788086-₹1847& 30005410130358121392974-₹959.I tried to contact my bank but no charge dispute form is available so they are no t helping me anyway and Myntra is saying since they provided the reference number they have nothing to do with it.please contact sbi for my refund.
Sir Please help me to get my refund back to my card. Transactions details are attached for your reference...