Punjab National Bank [PNB] — refund not processed bank reference number[protected]

Address:

72 inf brigade Morar cantt GWALIOR, Gwalior, Madhya Pradesh

Sir i am ajay singh rathore. I am a pnb customer. My a/c no. Is [protected]. Branch location is 72 inf brigade morar cantt gwalior madhya pradesh.
Sir, a refund of rs.1296 has to be credited in my account by 10 july 2019 which was processed by myntra on 27 june with bank reference number[protected].
But till now the refund is not credited in my account.