Rewards card!

All the stores are starting to use "Rewards Card" to give you points to use on whatever you want.  You can sign up in the store or online.  I always liked using these "Reward Cards" in the casinos, so why not in the store.  The other day I signed up in the store, or I think I did.  I needed to add a prior purchase on it so I went to the internet site.  Yes, you know me and these internet sites.  I filled all the information in and excitedly hit the button that says continue, and got the message that my password doesn't match the one that they have.  I tried again and again, no luck.  I then called the 800 number and we tried together, still no luck.  Okay there is a place on there that you can hit and they will send your password.  Let's see how long it takes to send my password.  In the mean time I will continue to try, maybe I will hit on the right one.  Help.......