These reward points are a con game! I have a code off a case pack of C.F. Diet Coke and it is telling me that the points have been entered all ready. Since is printed on the inside of the case and I personally opened the case I know it was not opened before. I also have a 20 oz bottle that it claims I am entering the wrong code. They don't give any "contact us" email just that goofy FAQ which is of no help. Time to check out the Pepsi rewards program!