Audio plays through speaker when I get a call

I have this pos samsung galaxy s6 edge plus.

I like this app because it does what this stupid phone should already do for me.

However, when I receive a call the music I am blasting through my bluetooth headphones plays through my speaker for about a second.

Needless to say this is very embarrassing in an open office environment. How do I fix this?

The problem is the the music app is supposed to handle pausing when your phone rings.

You must have a headset that supports both Bluetooth A2DP and Bluetooth (mono) for phone calls. You listen to music using Bluetooth A2DP and the phone rings. The phone should make the Bluetooth (mono) connect and play a beeping sound in the Bluetooth headset. While this occurs, the music player should be paused.

What music player are you using?