Myntra.com — Tag missing from product and customer being held responsible for that

I ordered for a product from Myntra on 13th October 2020. The details mentioned as under
Placed On: 13 Oct 2020
Order No:[protected]-4474301
I received this order on 17th October 2020. I had to place a return order on the same date 17 October 2020 as there was a size issue and also the tag was not available on the product. The courier person came to collect the product and took it.However I got an email stating that the return has been rejected. I also lodged a complaint with Myntra on 17th October for which I was given a reference number. Without a revert, Myntra people today on 18th October 2020 sent me an email stating that my return order has been rejected and my item has been shipped back. What nonsense is this. This is not for the first time it has happened. For the last 4 months I have been facing such issues and I have raised multiple complaints to Myntra but it seems that these people dam care about things. Please help.