Communication is an art form, and unfortunately, like all art, it is near enough impossible to teach.

There are however, a couple of things you can do. The first is to register just how you are speaking to him. If you are used to being interrupted, then it may be that your tone of voice is now more and more subconsciously accusatory. If this is the case, it is natural for him to interrupt you in a defensive response.
Interrupting is incredibly rude and is the result of impulsiveness. If your husband is particularly impulsive then this might be a little harder to break. If he is not however, then he is just being rude and you need to address this immediately. Tell him he’s being rude and if it looks like he’s going to interrupt you, keep talking.

Alternatively, you could write him a note or an email explaining what your problem is – that way, he has it all down in front of him and can argue with himself if that’s the case.

If he really is too rude to stand, get your own back. Take a look here and find a quiet man who will listen to every single word you have to say. Not only that, they’ll act upon it too!