Bluetooth takes over

I do not want to hear phone calls through my hearing aids. I use bluetooth in my car to listen to Pandora. If I get a phone call it rings in my hearing aids and comes through them. The volume is much softer than when phone calls come through my car audio system. This bad app overrides the audio bluetooth. When driving if I get a phone call I am stuck in the Kirkland app and cant return to audio system. I have to turn off my phone bluetooth and turn it on later. When not driving if I forget to turn off bluetooth calls come through it. When I get a call I can select i phone over bluetooth, but I have to continually repeat the selection because the Kirkland app overrides rhe phone. If I did not need the volume control I would delete this annoying app.

Happy music student about Kirkland Signature Choice, v3.2.1