Off Topic...
I have Payback Big Bazaar Cards issued from Asansol and Purulia Big Bazaar. While Railfaning and visiting various cities, I have used them across many states. Yesterday I tried to redeem credits in Big Bazaar Bokaro using those cards but the staff strictly denied of no proper reason saying WB cards can't be used. Thereafter, I used the same cards in Jamshedpur Big Bazaar successfully. That's a lot of humiliation. The cards are relatively new having no technical problems. What is the issue at BB Bokaro?