ANSWER:

You must not listen to them in this regard at all as shaving is totally prohibited and there’s no obedience to the created at the cost of disobedience to the Creator. 

You must be respectful and never raise your voice when dealing with such situations with your parents, however you must be firm in your decision and never go against Islamic rulings. 

I have some light beard hear and there and iam not shaving it to have sunnah. But my parents are trying to force me to shave to have much more darker beard .they are saying to look much more buetiful and darker .what to do ??