Spotify has taken over my phone. Make it stop.

[emelep]

I have an android phone.  I listen to a lot of podcasts. Most of the time, in fact, I am listening to podcasts.  If I pause a podcast with a bluetooth device and then press PLAY.... SPOTIFY COMES ON INSTEAD.  Why is this?  I do not want spotify to be my default anything.  I have even force stopped it in the background.  Why did spotify make itself so important and HOW DO I MAKE IT STOP.  Just play spotify if I am running Spotify, right? Thanks.