Myntra.com — Different product received

I had ordered two pairs of footwear on 05/09/2024 under ORDER ID:
# 1277508 [protected] amounting to Rs. 1172/-.
I received both of these on 09/09/2024.
One of the items was DressBerry Silver-Toned Embellished Open Toe Block Heels. I received a different product against this for which I am continuously writing mails as well as talking to your customer care team regarding its return and my refund.
One of your executives asked me to update all the pictures of the product by creating the tickets in Help Centre section, to which I immediately responded.
The pickup agent came once but refused to take back the product by citing the reason as "Quality Check" not passed (since the images were different). He asked me to tell Myntra executives to approve this from backend. But daily I am asked to wait for 3-4 more days.
I had never expected such a horrible and bad experience from Myntra which is just causing mental harassment to me.
I am an old customer and never faced such a bad experience.