Voi Jeans Retail India Private Limited - They are not providing refund

I bought * jeans from their website.

I kept * jeans and returned the rest * jeans because of fitting issue. size does not match the description.

I asked for the return. they said you have to ship.

so i shipped the products.

here is the tracking details:
**************
Track shreemaruticourier.com

They have received the products.

They are not responding.

The Order number is:
Ecom Order *****

*. Men's Indigo Skinny Fit Cropped Jeans - **
Fulfilled July **, ****

*. Voi Jeans Men's Black Track Skinny Cropped Jeans - VOJN**** - M
Fulfilled July **, ****

Please help.