Extremely rude manager

I had to talk to the owner of the restaurant and the Manager 'Johan' answered the phone. <br> <br> I was a little confused in the moment when he answered the phone as Johan and for a second I was doubting to who the person is I must speak to. And as I asked my colleague his name I heard him in the background shouting to someone \Who the f#** phones someones and doesn't know who the f#** they phoning"<br> <br> On my part"