He left the message on Line. We thought he was asking us to do A but actually he was asking us to do B. It totally went wrong. So when he was back to work this morning, he was cluess that why we cannot get it right. Huge misunderstanding? I asked my friend in another team and he thougth we were doing just fine. The supervisor was picking on us. Thats all. Can I trust him? Maybe not. I shall have learnt something from the mistake.