I have ordered 2 dresses, they said Buy 2 get 1 free for 1000rs, and now after billing they are telling to Pay 1950 as Market price, I denied to to do so

I asked for refund now, as it's looking some fishy, they are denying it, WELCOME poornima.fashions 👗 DRESS PRICE 👗 ONE DRESS PRICE 500/- TWO DRESS PRICE 1000/- BY 2 GET 1 FREE 4 DRESS PRICE 1399/- 5 DRESS PRICE. 1599/- 6 DRESS PRICE. 1999/- 9 DRESS PRICE. 2699/- 12 DRESS PRICE. 3499/- 15 DRESS PRICE 4499/- SELECT 3 DRESS SEND PHOTO COD NOT AVAILABLE 🚫 This there statement provided and there is no term and conditions mentioned I paid 1000rs while ordering Now they are asking 1950rs to pay to proceed *Billing statement process update* Your Order ID *767DCG898921409YO* Your parcel is out for delivery but Your billing statement process showing pending *(₹1950)* ____________________________________ Billing statement process this is when showing pending when your nearest of courier branch asking this for showing true value of the Product in the bill _____________________________________ *Note:* Your billing statement process amount *1950* is *not a permanent amount* after showing true value of dress this amount will automatically *refund back to you* by the same account which you're paying billing statement process fee _____________________________________ *Process won't take too much time all process will complete including refund spend time is 5-10 minutes*