The only problem I found in this mall that if you are going to eat at food court that is situated on fourth floor then you need a card for it. No cash or online payment is allowed. At counter you need to get a card of minimum 300 rupee that was made by the staff.
If you use less money then they returned the amount that is left and you have to return the card. but I think debit or credit card and cash service should also be allowed