Nike India — Refund id or reference number proof of refund

Address:

Dimapur

Nike is so horrible why can’t Nike refund my amount I have return in dec and Nike already received the return product on 24th Dec they said have refunded my amount since I haven’t receive I have ask for Refund ID, Reference Number But cudtomer service cannot provide me that refund id and how can I complain even in bank without any proof of refund and wen I call Nike they say refund is already initiated thn wr is my refund id?
Order no G[protected]