Myntra.com — Product not delivered, but Myntra claiming it is delivered

1. I ordered ‘Moda Rapido Women Pink Floral Embroidered Yoke Design Straight Kurta’ on 26 Feb 2022 in Myntra. Myntra is claiming that it is delivered, but I have not received the product.
Order details:
Invoice Number: I0622KO[protected]
Order Number:[protected]-8902703
Invoice Date: 26 Feb 2022
Order Date: 26 Feb 2022
Paid: Rs 1969.00

I have contacted Customer care, they are saying 5 days of delivery have passed. So they can not resolve the issue.

2. In addition, I have ordered same (above) product of two different sizes - S and M. I paid as follows:
a) Size S : ₹ 754.00,
b) Size M : ₹1, 969.00
I do not know why the cost is such different.