Dealing with other quasi religionslo

Most of my friends are not Christian and I love talking with them about our different religions. A few of them hold beliefs that are starting to get to me, not what they believe but how it twists the words of our Lord. I find myself getting frustrated at the quasi religions that take pieces of Christianity and twist it to call their religion inclusive or to appeal to people seeking God and then add in a bunch of other things.

Great examples are the "New Age" and LDS (aka mormanism). I see some people involved and can see they only are involved because they're attracted to the Christian portion mixed in with all of the other jazz. It makes me sad and angry because I see they are yearning for a relationship with God and I see how hazy everything is and how that's blocking them, if that makes sense.

I don't like feeling so frustrated or like my frustration might alienate people but at the same time I feel like I should be upset about these things and I found a passage in the bible that I interpreted as God being dissatistfied when cults twist His word drawing them away from Him.

I guess I dont understand why my frustration is building so much or how to process these feelings or what my role is as a Christian other than answering questions and trying to be a role model.

I hope that makes sense. Any advice?