Zara — Amount was deducted from my paytm bank account but zara didn't receive the payment

Address:

Zara, DLF Mall of India, Sector 18, Noida

I went to Zara at DLF mall of India Noida on August 30th and tried to pay my bill via Paytm UPI.
The cashier got the QR code on the card machine and I paid my bill.

The amount was deducted from my Paytm bank account but the receipt wasn't generated.
The cashier told me that Zara didn't received the payment hence the receipt wasn't generated. He told me that my money will be automatically refunded within 48hrs.

I patiently waited for 2 days but got no refund.
Then I called the same Zara store and told me that they can't do anything about the situation and I need to go to the bank and follow a proper procedure to track the money and get it back.

As of now, people at Zara are just chilling whereas I neither have the money nor the clothes. Now I got to go to the bank just to get my money back.
I find this very absurd.
If anything, the cashier should have told me not to use Paytm UPI and saved me from this hassle.

I tried to see if I can get any help from Paytm but they say only the merchant can help me.

I hope to get a refund asap but am very uncertain about how much time it's going to take.

I am adding a slip thing that the cashier gave me and the screenshot of the Paytm transaction.