Boring Aygo question - vandalised bluetooth

[D-Angle]

My fiancée's 2008 aygo was broken into to steal the dashcam, and while they were there the fkers decided to rip out the bluetooth control button as well. It looked like this:



Main problem is that now, the bluetooth system keeps cycling through the audio menu, through the cars speakers, and with no controls I can't turn it off. Any ideas?

Pic of the wire that used to be connected to the controls, I have searched for the control unit online but they all want me to buy a complete kit.