Myntra.com — Exchange of order

Address:

H.No. 434/13 Multani Chowk Hisar

I huv ordered a footwear from myntra. when i opened it and tried it was big in size. So i put it on exchange. but when the delivery boy came for exchange he was saying seal of myntra is not there. But it was not there when i got the parcel. if they sent me without seal how can i come to abouy the seal. company tag of footwear was there and now also. i complaint about the same to myntra. They were saying to reschedule the delivery within 24 hours. But after three days nobody came to take it. Kindly solve my problem.