Notice of limited service

I usually fill up my petrol in the Engen at Norwood cause it's a kilometer from my office. On Tuesday I went to pour petrol and when I realized I have been waiting for over 5 minutes, which is very unusual, I hooted. The attended came and told me that there's only 2 of them and we black people intimidate them by hooting and we want for them to loose their jobs. I didn't understand the anger in his voice cause there is not even any notice to the customers that after 6pm the service is limited and we should be patient. He kept on insisting that it's the BLACK CUSTOMERS who hoot and put them under pressure, by the way I have never hooted before. This morning when I needed to pour more petrol I started searching for a new Engen garage on my way, I don't want to meet that guy again and be told I want him to loose his job and I feel that black customers are not welcome at the Norwood Engen petrol station.

Thank you.