Myntra.com — myntra product not received and not refund the money

Address: New Delhi, Delhi, 110075

I have ordred three blackberry trousers on 24 dec 2019 through app order no.[protected]-6727301..
On 30th dec i recieced 2 trousers of three, unfortunatly both trousers were large 34'size, i have ordered for exchange of both trousers khaki and beige color but in khaki 32' size were not availabe so i requested for return khaki trouser and exchange for beige.
On 31st dec myntra delivery boy mr. Vijay (Phone no. [protected]) comes to my home and delivered third trouser (Brown color) and ask for return product that time my sister handover myntra packet with both khaki and beige color trousers to mr. Vinay for return and exchange.
That time mr. Vijay was on phn he picked the packet without checking and went away.
Next day myntra delivery boy mr. Sonu (Phone no. [protected]) were come to deliver excahne beige color trouser and he ask for previous trouser for exchange, when i explain that i have aalready handover to myntra delivery boy so he refused to give me that packet.
I have complaint on myntra customer care but not getting responce.
This is very un professionaal behavior and cheating with the custome that will spoil mynta logistic name.
This is my warning to myntra please do fair with me or all customers otherwise you will be in trauble.

Thanks
My registerd no. Is [protected]