Astron garage north coast road refusing to resolve problem

Today I filled fuel at astron energy 838 north coast road. The fuel attendant filled diesel in stead of petrol in my vehicle. The staff refused to call the owner and sort out the problem. Now with all this, I have my child with me who now has to sit on the roadside and eat, and still 2 hours later the staff are refusing to call the owner and resolve the problem.