HDFC Bank — Refund not getting from smartbuy

I have book a bus ticket on mar 21 in smart buy and its cancelled some technical issue. I have a made payment through payzapp wallet

order ID:[protected]

and they send me one mail with regarding refund from smart buy .Details as follows
Refund amount: 235/-
Refund date: 30-Mar-20
RRN Number:[protected]

the payzapp team send me the mail like this with the details provided by smart buy,

We regret the inconvenience caused to you. However as discussed earlier, we have not received refund from the merchant towards the below mentioned transaction. Hence, we request you to get in touch with the merchant for further assistance.

they play a game from payzapp wallet to smart buy and vice versa