Myntra.com — not picking up the return product

I ordered a stylo bug girls blue & white printed a-line dress from myntra.com on oct 13 -2019 and i received it on oct 19-2019. But as the size of the dress is too small i requested for return on oct-19-2019and it is accepted by myntra on the same day. On oct 24-2019 i got a mail from myntra saying pickup failed. I raised complaint in myntra regarding this and waited till nov-1 but item has not been picked up. I again raised return request on nov-1 but till date the item is not picked up. Please take action to return my product and refund the amount asap