Punjab National Bank [PNB] — I didn't get my refund

I booked 5 tickets through irctc in last 4 days through my pnb account. 4 of them got cancelled but i haven't received any refund yet. I called customer service on 1st day they told, my account details are not shown there so they registered my complaint for such. After 2 days when i called same thing happened they sent a mail regarding reply. Today i called again same happened and they sent mail for reply. I tried to contact my home branch but no one's picking call.
What should i do even customer supervisors are of no help only solution they have is, wait. It's been almost a week and every single time they told me same thing.