Adidas — Refund link

Address:

Haryana

Dear Adidas On 12 May 2023 I purchased a tshirt and received it on 15May 2023 .But I wanted to return it as the size was an issue.So my order got returned to the warehouse and got approved for a refund as I received a tax credit note also.But my made of payment was cash on delivery and the link was not sent to me where I have to fill bank details so how I get black my refund.