As in 1 John 4:6 (We are from God, and whoever knows God listens to us; but whoever is not from God does not listen to us. This is how we recognize the Spirit of truth and the spirit of falsehood.), have you had or have experience with this, where people, even people you know don't listen and don't acknowledge what you say? And what do you do, how do you react?
Richie from Boston says on his videos (youtube channel): like, share, subscribe... or don't!
I'm starting to adopt that mindset with evangelism. When speaking about the things of God with others, we only speak that which we've read, seen, and heard: the truth about Jesus Christ and salvation through him. If they choose not to listen, you cannot argue them into listening, nor can we do well to convince them. The most powerful testimony in the world won't cause an apathetic heart to receive Christ, it's just not going to happen.
When speaking about doctrine with other Christians, we tend to receive the essential truth and then hold onto that for dear life, lest any should deceive us. It's interesting because, trying to heed the plethora of warnings in the scriptures about false prophets and false doctrines, we tend to become a little close-minded after we receive Christ and learn the basic doctrines. This is both advantageous and disadvantageous; on the one hand, if we become that way (and most often we do), we are very good at not giving into false ideas that are perpetrated by false prophets (which is usually possible only through deep meditation and knowledge of the scriptures); however, on the other, when presented with something that is evidenced in the Bible, but not something that we presuppositionally believed, we tend to disregard it, even though it very well could be a complementary truth.
I suppose that's just the way of things. As far as reacting to these types of situations, discernment is needed. We must determine how important the topic is in of itself, how important or necessary it is for that other person to understand and believe that topic/doctrine/idea, and how much effort it would take on our part to give a good case for it. Honestly, some truths or doctrines are just not worth the time and effort, seeing as how they create needless arguments that inhibit the testimony of another truth. We must always allow the non-essentials to give way to the essentials. As I was told the other day, "The plain things are the main things."
I hope that helps, at least somewhat. God bless, friend.