iPhone Van blue tooth issues

[Madhouse]

Does anyone know why when the van or phone pairs up with each other the outcome is that the van or iPhone automatically rings itself. 
The only way I can cancel the call is to turn off Bluetooth on my phone.

[Tree]

Must be a setting on your phone doing it - I've got no problems with mine and have never known of the problem.


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[Madhouse]

Yeah it worked ok today when I got in?
Sometimes happens sometimes it doesn't.
I only asked because I don't like knowing why it's doing it.