As I said before, but you didn't reply. There is no one spokesman for Islam, because there are many factions of Islam. No one can claim to speak for Islam because there are different interpretations of it all over the world. However, ISIS do represent their version of Islam and are doing their best to enforce it on others. Just because they don't represent your version of Islam doesn't make your version the "true religion" just as it doesn't make theirs the "true religion" although no doubt both of you would argue that you were right and the other wrong.