I share that if one wants to be heard then they need to listen. That we cannot hear if we are not listening and only want to be heard. When we are in a place of wanting to be heard but are not listening, this  is usually where voices raise and anger and frustration kick in and no one CAN listen or be heard.

I may suggest taking a deep breath and then another the next time one feels compelled to say something. Rather than just go back at it, actually refrain from engaging with ego for a moment and see what happens.

Sometimes I may point out that they ego is so active that they are not "hearing" accurately. If they are not able to hear this then I suggest taking space until they are both ready to listen.

Perhaps at that point they may be willing to practice non-judgemental listening.
 
One very effective tool my Teacher taught me is to practice "What I want you to know is..." Sitting facing each other, the two people take turns completing this phrase 5 times while the other person listens - without interrupting or thinking of a defence - and says nothing but "Thank you," after each statement. Then switch. This can be done as many times as necessary to clear. The key is that neither person has to "agree" with the other - the point is simply to hear - and hopefully - to be heard.

Another question I have found to be helpful is asking "Do you want to be happy or do you want to be "right?"

I use these on myself too. I find the more I practice these tools the better the communication is.

In the end it is like Gandhi said, "You must Be the change you wish to see in the world." If you want to be heard, then listen. If you want to be loved, then love. If you want to be accepted, then accept. Struggle comes when we do not accept and acceptance brings us peace.

Namaste.