Myntra.com — exchange order picked up but no other item was provided

I ordered a kurti on 14th december then returned it which was picked up on 27th december but i was not updated about the pickup and refund... So i complained and then i got the refund on 4th january (Proof of statement attached)..!! But again the same was not updated nor the order was closed..!! Now in between i ordered the same kurti in sale at a very low price which i requested for exchange of size. This exchange was sheduled to happen oh 7th but was picked up as return of my previous order on 8th january (Pick up mail and mssg attached)..!! Now my exchange order too was picked up and i didn't got any refund or exchange and myntra is denying the pickup..!! Now pick of return item was processed already as attached in photo as proof then what did you picked up on 8th january..!! So the exchenge item was picked up.. And now i have nothing to exchange.. Also i have complained so many time regarding this.