Adidas — Refund not being processed by Adidas for over 2 months post return

I had bought a jacket from Adidas, but had to return it since Large size was too big for me and Medium size wasn't available.
Mode of payment was cash on delivery.
Order no: AIN00654894
I received an email on 12-Apr-22 that the order was successfully returned

However, after multiple calls with adidas representatives, and filling out multiple refund forms again and again, I haven't received my refund. It is close to 2 months since the order was returned but I haven't got my refund back. Representatives state that the finance team isn't going ahead with the refund process.
Pls process this ASAP from your end