I used my phone at the petrol pump?

I used my phone at the petrol pump today, which I have never done before (I only picked up because it was an emergency). Then I went to pay and the guy working behind the counter started shouting at me while there were customers behind me saying 'you shouldn't be using your phone' etc very aggressively. I mean he scared me more than the idea of a fire starting. The problem is me and him work in the same company (petrol station of a supermarket chain) and I'm sure he will report me tomorrow as I am an employee and should know better, but I sincerely had no clue. Would I get into trouble even though he was extremely rude and aggressive to me?