People are not even following Quran and sunnah, it is all sunnah! Show them a verse from the Quran and they jump back in shock that you dare to challenge their ancestral beliefs with the Word of Allah! Are they not now just as lost as the people of the scripture?:-
3:20 If they argue with you (O Messenger), tell them, “I have submitted to God; I and those who follow me.” Say to the People of the Scripture, and to those who have no Scripture, “Would you submit (to God)?” If they submit, then they have been guided but if they turn away, then your duty is only to convey the message. God is Seer of His servants.
3:21 Those who reject the message of God, and wrongfully kill the Prophets or their Mission by mixing truth with falsehood, and kill or harm the advocates of justice in the society; promise them grievous retribution.
3:22 They are the people whose (good) deeds shall be nullified in this world and in the Hereafter, and they will have no helpers at all.
3:23 Have you noticed those who were given guidance through the previous scriptures? When they are invited to uphold this Book of God, to judge their disputes and apply it in their lives, a party among them declines and turns away.
5:44 and 45 are good translations for those who have eyes to see them, but unfortunately, the blind are not the same as the sighted!