One day someone will have to help me understand how your form of name calling helps. I'll do it.
Heretics and cultists are enemies of Christianity.
The second step in defeating an enemy is to dehumanize him in the eyes of the populace.
Associating the enemy with derogatory names aids in dehumanization.
Why you assume I was intending to "help" is quite beyond me.
Galatians 1:6-10 (King James Version)
6 I marvel that ye are so soon removed from him that called you into the grace of Christ unto another gospel:
7 Which is not another; but there be some that trouble you, and would pervert the gospel of Christ.
8 But though we, or an angel from heaven, preach any other gospel unto you than that which we have preached unto you, let him be accursed.
9 As we said before, so say I now again, if any man preach any other gospel unto you than that ye have received, let him be accursed.
2 Corinthians 11:12-15
12. And I will keep on doing what I am doing in order to cut the ground from under those who want an opportunity to be considered equal with us in the things they boast about.
13. For such men are false apostles, deceitful workmen, masquerading as apostles of Christ.