Lies, half-truths, and deceptions confuse a child. Your child needs to know the rules for good behavior and that you will enforce the rules fairly. A child has the right to be understood. Listen to your child. If you don't listen and learn, you can never understand.
Parents can easily expect too much.
Children need to be taught and told and shown again and again. When they are hurried and pressured, they often do less than they are able to do. Adult behavior should be consistent - the same today and tomorrow. Changing rules too often confuses children and makes them feel insecure. Your child needs your attention and companionship.