Good for them, but there was this one story of a woman was told by her preacher if she left her church, and attend a new one she would go to Hell. Funny thing is it was the same denomination CoC, only it was near to where she lived.You are right about Church of Christ, but I think there are a few different types of churches that have that same name. Some of them are not Heretical, I can't remember the one that isn't. I've met people from the one that isn't heretical and they believe that "The Church" is all believers in The Lord Jesus Christ, even those outside the denomination.
Admit this example is extreme, but there are others.