Flipkart — refund of my payment

Address:

Baikunthapur,khudiram pally, P.O-Rajpur P.S- Sonarpur, Kolkata, West Bengal, 700149

I ordered one phone with exchange on 14th march 2020. I had to pay 1799 and i did it through paytm upi. Now paytm shows the transaction was successful so my money is debited but flipkart says they didn't receive the payment, they told me to contact with my bank. I did contact with paytm and tthey confirmed the payment was successful at their end. So i wanted to know the details of the transaction to flipkart, but they didn't give a response, they just said "please be patient we are looking into it." i just want my refund.