I have a Samsung Galaxy S10E. I receive calls while listening to my music app via bluetooth, even though I have Do Not Disturb on.
My settings on the Do Not Disturb Screen:
Do Not Disturb: toggled on
Add schedule: none
Exceptions:
Calls, messages, and conversations: None
Alarms and sounds: Alarms and media
Apps: Calendar
I have tried various 'fixes', to no avail.
So annoying!