Central Bank Of India — not refunding my money after deducting from my bank account.

Address:

770076

1. On 15/01/2018 when i was booking a ticket through yatra of amount rs. 455 was deducted & transaction was unsuccessful.
2. On 01/02/2018 transaction of rs. 659.77
3. 02/02/2018 transaction of rs. 659.77, the money was deducted & is not refunded yet. All these transactions were done near midnight.

I raised a complaint through the bank several times since february 2018. They said they have registered a complaint and asked me to wait till my money is being refunded by the central office but nothing happened and my questions are remained unanswered. Anytime i go and ask to the bank, they say they are unaware how much time it will take to refund.
I have my bank account on cbi, duduka branch with ifsc code - cbin0284879.
I want my complete refund of rs. 1774.54