Adidas — Refund not received (April order)

I had originally returned 2 items from my AIN00697664 order. It was ordered and returned in April. After various phone calls and emails to the company, it’s clueless as to what they’re doing with it. They asked me to fill multiple bank details form as it was a COD. Every time I call it’s just plain fake promises regarding getting the refund this time around. It’s just annoying now.

30 July 2022 and they sent the shipping company to pick up the order again. I don’t understand how this makes sense. It’s terrible they sent the pickup for a order that was returned months ago and confirmed by the warehouse

It’s an amount of approx 3.75k and I really would like to take a legal action if adidas messes with small orders like these and still be carefree