Uco Bank — refund not processed

Address:

Kandhamal, Odisha, 762103

One of my refund by myntra online shop has been successfully credited on my account, but after some days i have updated my passbook, but not showing the amount of rs. 1761.48/-. And they given me a reference no as arn no-[protected].
But in my home branch manager is saying we could not do with this ref no. And they are refusing to take any chargeback complain.
Please help me