How do I stop my phone from connecting to 2 Bluetooth devices at same time

[h4mza]

I can't see the option for dual audio in Bluetooth advanced settings

[AndrewL]

@h4mza: Please can you clarify which Bluetooth devices you're having issues with? Furthermore, have you checked the manufacturers instructions for the device(s) to see if Bluetooth pairing mode can be disabled? In the meantime, please swipe from the top of the screen to the bottom > Media, then tap the circular tick marker to the right of the relevant device to enable/disable audio output from that device. 

[Russman81]

I have a galaxy Fe20 phone and when ever I am listening to music through any device my phn connects to any of the work cars I have previously been connected to if they drive anywhere near me. Not only does my music stop but it starts playing in the car. when i look at my phone it says connected to 2 devices but i then have to disconnect to the car then press play again to keep hearing music. I never want this to happen and I never want to be connected to 2 devices so please tell me how i can fix it. Thanks