Adidas — Not received the refund amount

Website:

adidas.co.in

I had ordered a pair of shoes from adidas.co.in order no. AIN01223799 due to an issue with the size of the product that was ordered, I immediately raised a return request with Adidas, the order was picked up by the courier partner the very next day I received an email from Adidas on August 14 2022, stating that the product has been received by them.Since it has been 16 days neither they tried to call me nor have they sent me an email, as the payment for ordered was in cash on delivery.They don't have my bank details either . Kindly assist in resolving the issue.