as salam alaikum
you should always respect your parents and treat them kindly. However they cannot dictate the way you have to live your religion. A hadith says:
لا طاعة لمخلوق في معصية الخالق
"There is no way to obey a creature by disobeying the Creator" (see "Musnad al-Imam al-Kazim").
You should also try to guide them with good manners and give them nasihah concerning their religious duty as Muslims and parents.
With prayers for your success.