Can I not use my points after I decide to keep them on iCoke.ca?

Ok so I have 1500 points on iCoke.ca, and just recently (as in a mere 2 minutes ago) cashed all 1500 of those points in. After first bottle cap pin code was entered on the website did not ask if I would like to keep my points, or to use those points for a free song on iTunes, however on the second cap code it DID give me this option, but I opted out for the time-being, as I had one more code to enter. On this third entry it didn't give me the option, again, and I can not find anyway to try to redeem these points as free songs on iTunes. Is there any way I can get my free songs? Or did the b*stards over at Coca-Cola screw me over on this one?