Bank benefits and Credit card reward programmes

Q: Is the earning of ebucks fnb offers permissible?

Q: Is eBucks offered by the FNB bank related to intrest and if so is it permissable to make use of eBucks?

Q: I just wanted to know, I received an email from FNB and I am not sure if you know how EBucks work but basically it is earned from money spent from your bank account. I spend money and they award me EBucks for doing so. These EBucks are worth 10 cents each. I basically wanted to know if I could use my EBucks as a form of Zakaat to the Pakistan flood victims?