1) Slice wallet - you will get Slice Wallet UPI to pay other credit card bills or bank transfer.
2) Im not sure but i think Omnicard wallet - Debit card loading is free.
Full kyc Omnicard wallet - Activate Wallet UPI and transfer to bank (per day 10k allowed for free bank transfer or merchant UPI payment you can use higher limit or higher limit for Credit card bill pay via Wallet UPI).
3) QWTag Wallet - Debit card loading is free. You need to complete full video kyc and get Wallet UPI option for bank transfer or credit card bill pay.