South Indian Bank [Sib] — no refund even after 14 days of product cancellation

Address:

560029

I tried to purchase a OnePlus Mobile with exchange policy from Amazon on 27th of July 2018 (order number[protected] through Net Banking. An amount of Rs. 31, 136/- was deducted from my account despite a failed order placement. Then I cancelled the order thinking the money will be reverted back to my SIB account. I contacted Amazon which assured my refund in maximum of 4 days only if my bank sends an approval to Amazon. The bank was so irresponsible addressing my issue. Today it is the 14th day and I still didn't get the refund. The money as I could figure out from my bank account is credited to this account given below.
Payee Name: INTERNAL ACCOUNT-CITRUS PA
Address (Line 1): H-203, BUILDING NO.1, GREENWOODS, A.K.ROAD
Address (Line 2): CHAKALA, ANDHERI-EAST,
City: MUMBAI
Zip Code: 400093
State: MAHARASHTRA
Country: INDIA
I need my money refunded immediately!