Club Factory App - Refund not received

I had ordered one top from club factory on **/*/** and I have received this package on **/*/**.my order no. Is SO********. I have already returned it on **th June with your courier partner ecom express.i have also sent a copy of return receipt */* times to your support center. Now please generat my refund as soon as possible.today is */*/**. I also come to know that you have already received my return package on **th of June but still you are not refunding my money back. Your customer care executive replying me that they have not received my returned package I am also sending a proof that you have already received my package but you are lying to me.