Anomaly when using USP to play music in 488

This is a strange one and has me pulling out what little hair I have left.

When I'm using my phone connected through the usp port to play music, it regularly also plays what sounds like sat nav directions but in a number of different languages. This is without the sat nav running.
Any suggestions please.

 

I do use Waze but always exit it fully when not in use. I've just logged out of Google maps in case that was causing the issue so will report back once I get home and try it.

 

Still the same problem.

I've noticed when in media with my playlist on, if I press 'list' on the car's screen it lists all of these commands that keep interrupting the music. It's driving me nuts!!

 

*UPDATE*
My remaining hair is now safe from being pulled out. I have found that if I use the Bluetooth connection everything works as it should. It's only when I try to use the USB connection that things start getting weird.