UCO Bank — flipkart refund issues

Address: Akbarpur, bhagalpur, 813222

Website: Flipkart

This is regarding:

Order number: od[protected]
Product name: gap regular men light blue jeans.

I had orderd a prouduct from flipkart and i do return of that product for refund. The refund was issued by the flipkart on 3rd of dec 19 on the behalf of the product.
Still the balance is not credited to my account.
I had called the flipkart customer service they suggest me go through bank with your
(Refund reference no.[30005193329338240002242]
Refund amount (3499)
Account holder name: nikhil raj
My account no: [protected]
Ifsc: ucba0001379
Branch name: nandlalpur
But they didn't help me. Then after flipkart customer service suggest me to fill form online. So please help me.!!