Adidas — Not refunded on a COD

Address:

Srinagar

I had ordered 4 pair of shoes out of which I returned 2. It was bought by COD while processing return request they didn't ask for any bank details and the method remained "Refund method: COD". I did find it confusing but I clicked okay. Now its been a month I havn't been refunded. I got an email the amount will reflect into your bank account within 4-5 days but when I havn't provided the bank account (as they did not as for it) How ?
I need my refund back as I am a poor guy. PLEASE