Red Dead Price Different than advertised by email

I received a promotion by e-mail saying that Red Dead had a 73% discount, totaling R $ 63.73, but I enter the Razer website and it has a 20% discount, 3x 3x by Hype, but it is not what I received for e -mail because that information was not included. I contacted Hype to report the problem and they said that this problem was not theirs but Razer's, does this not constitute misleading advertising?