Myntra.com — I received wrong size and there was no price tag

I ordered a kurta set of m size. Order number[protected]-3781403. I recieved samall size and there was no price tag on it which I didn't notice as there wascompany tag on it. When I initiated return the pickup guy asked me to approach Myntra customer care.
I have already placed another order for the same set of large size.
Please do the needful