Fashion And You — Site not refunding my points or money for the item I returned

Address:

Hyderabad, Andhra Pradesh

I had ordered two Items from Fashion and You and after I received them, the size turned out to be small and bigger size was unavailable. Then I requested a return and they did not initiate it when I submitted the same on their site helpline.Then I called them and the customer Executive said that the return has been initiated, it would be picked up soon. Then no response came for many days. Then I again called and again he told the same thing. I also emailed regarding the same with no replies. Then after many days I received a mail saying that the reverse pickup has been discontinued from the area where you live in, so you will have to mail it back yourself (email snapshot attached). I did the same, I speed posted the order to them (scanned receipt attached). I checked the speed post status, it showed delivered (Snapshot attached). They did not revert back for many days. So I again called; This time the customer executive said that they have not received anything. I highly doubt it as I have sent the post to the address they gave me several weeks ago. Kindly do something. This is highly unacceptable and unprofessional. My Order Summary is Order No. 4321462 of amount 948.00.