Kasturi Fashion — I have ordered a lehenga and pre-payment was done but the delivery person is asking for the Cash on Delivery option

I have ordered a lehenga set and done the payment of Rs 2500 via gpay. I ordered on Instagram channel named Sonali Fashion Studio. Now the delivery person is asking again for the Cash on Delivery. I tried contacting the Instagram account but she didnt reply, I am trying since last 3-4 days but no response. I also tried calling the gpay account number to whom i have paid but she is also not picking up my call. The UPI account details are as follows: [protected], Shaikh Ziya. Now, I am trying to contact on the phone number [protected], provided in the Bluedart tracking page. But they are also not responding, i have called several number of times. But no response. This is my hard earned money, please help me in this regard.
Order No.[protected]
Order Placed: 01 Nov 2023