no sound

I have a 2018 Ford Mustang Ecoboost Premium with 31k miles on it. A couple of weeks ago it wouldn’t start so I went and bought a new battery for $260 and that didn’t fix it because it was actually my alternator which cost me $700. I replaced the alternator a few days ago and everything is fine...

Am I the only one who had those problems? We have the car for about a month now and since we had a paint problems, Ford fixed it. We had a chock who was been rattling, Ford fixed. Today no sound came from the speakers no music no apple CarPlay nothing. The screen works but there is no sound even...