P.S: Not for everyone, just for those who have rewards card, Citibank Signature, Citibank Platinum, etc.
I have noticed that there is a point difference between what I was supposed to be rewarded for purchases, deducted for refunds and the actual points.
I got double deducted for refunds. They had to do a manual adjustment to put it back on my account. Difference of about 4 thousand points which isn't much in my case. Anyway I hardly use my Citibank card, got it because of the waived annual fee for life. But doesn't give me much assurance to use their card even if its triple points as I have also received triple points promotion to start using it again.
I know that the promotion was popular in ozb. You might want to check your points statement especially if you have any refunds.
edit: forgot some information and grammar
The problem with Citibank is even though you may pay not an annual fee, you will lose lots of time chasing them down and fixing their stuff ups :(