(I'm sorry but) I don't agree (with you) I see it differently (I'm afraid) I don't really agree I'm not so sure about that You must be joking. (Informal and not very polite)
(I'm sorry but) I don't agree (with you)I see it differently (I'm afraid) I don't really agree I'm not so sure about that You must be joking. (Informal and not very polite)