Canara Bank — Refund from Retail Shopping not reflecting on my account

I purchased a dress on 16th March 2021 from Faballey.
And returned the item. The refund of rupees 1100 was initiated on 9th November 2021 by their gateway partner Retail Shopping. The amount was supposed to be reflected within 4-6 business days The UTR number: 20210316111212800110168603690154600.
Still now that amount is not reflected on my account. The Retal Shopping team is saying the this amount is not accepted by the bank. Please look into this and provide me with a solution.