myDisable autoplay Music through my Jabra BT connected Engage 75 headset. I have disabled Airdrop etc AND I have spoken to Jabra support to no avail; they refer me back to Apple support. Please help

I have disabled Airdrop, Airplay etc. AND I have spoken with Jabra support to no avail; their Tech Support team refer me back to Apple. My Jabra Engage 75 monaural desktop headset autoplays Apple music when I terminate a call even when I have not been listening to Music (closing the app makes no difference; neither does rebooting the phone(s). Everything is on most current Firmware version; everything has been rebooted - please help?