Caramel sauce tastes too sugary what went wrong
By 'cream,' I am assuming you mean heavy whipping cream, which is normally used in caramel sauce, and not sweetened condensed cream, which some people use in place of sweetened condensed milk in certain recipes.
 The whipping cream in itself, is not sweet, so I'm not sure what the issue could be. Did you accidentally put too much sugar in? Or maybe next time try replacing the cream with butter, or try adding just a pinch of salt to the mixture to combat the sweetness.