Adidas — Regarding refund

I purchased adidas niteball form adidas site for 10, 199 rupees and due to size issue I initiated the return on the same day and the it was picked next day.
On 15th July 2022 the product reached the warehouse and after that I called them to ask for refund but they replied me that the product has reached warehouse but they haven't done the quality check and from 1 week they are giving them the same reply.