Myntra.com - Return pick up failed multiple times

*. On **-**-**** i bought House of pataudi shoe from Myntra.com
*. On **-**-**** delivery failed due to unknown reason
*.On **-**-**** product delivered but same day i lodged a exchange request due to quality issue.
*.On **-**-**** the delivery of exchange product also failed due to unknown reason.
*. I lodged a return request.
*. On **-**-**** the return pick up planned .No attempt has been maid from Myntra side.It is cancelled by the courier on **-**-****
*.I raised a dispute request.talked to customer care.
*.On **-**-**** the dispute is modified to resolved .
*. I received that return pick up is planned for **-**-**** and again it was failed.There was no attempt from Myntra.
**. They are unable resolve the issue , I feel cheated, I am not getting any help from them.