You may have to keep your distance from these family members who are telling you lies. You see the enemy works through people to bring us down and yes even your own family!
I would like to encourage you to read your Bible, keep reading it, it will strengthen you and encourage you, feed your Spirit. Ask God for understanding of the scriptures, that His truth may be revealed to you! There is only ONE way to the Father & that is through His Son Jesus Christ, it has NOTHING to do with church attendance.
Here is a funny little quote I want to share with you:
"Going to church does not make you a Christian, no more than sitting in a garage would make you a car"

"May the Lord Bless You and Protect You. May the Lord Smile down on You and Be Gracious to You. May the Lord Show You His Favor and Give You Peace" ~Numbers 6:24-26~
Be Blessed!
ljanz