MMI Radio Randomly Goes On
 

Hello community,
I have an Audi A6 Avant 2016. There are times when I don't want to listen to the radio. I get in the car, the radio turns on because the last time it was on. So I mute the volume, and at some point in the journey, maybe at the beginning, in the middle or the end, the radio will go back on without me doing anything! It's quite annoying. What could I do?