Central Bank Of India — service issue

Address:

Ranipur panchayat ranipur ,near kurry knights restaurant, Darbhanga, Bihar, 846005

I bought some products by flipkart on 9th december of worth 18904 and later cancelled on 9 th december they refunded the the amount 18425 on same day with refrence details refund date and time: 09 dec 19, 09:59 pm
Refund reference number: 30005193389344240002130 and 30005193389344240002395 i have filed complaint thrice but havent got any reply from bank side its 3 months i am still waiting for my money