ICICI Bank — Money debited for failed online transaction

Address:

271001

On 6th october 2016, I was trying to add money in pocket app(by icici) and amount of rs.1000 debited from my bank account but transaction was failed. I registered complain in pocket app. On 6th November 2016, they told me transaction was declined by issuer and to contact bank.
I visited branch and submit complaint, after few days they said, "transaction was successful so they can't issue any refund"
My uco bank account number- [protected]
Pocket wallet- [protected]@gmail.com