My account was "frozen" for a little while about a year ago - their reason was that I had two accounts with the same e-mail address (became this way because they bought out some other program 5-6 years ago - clickrewards perhaps?) - at that time I had asked them on several occasions to combine the accounts but they kept saying they couldn't do it. In the end they did the right thing by crediting one account with all the points that was in the other account but it was a hassle