Put yourself in his shoes: work that needed to be done wasn't done at the time it should have been (due to your mistake), and he had no way to get in touch with

Put yourself in his shoes: work that needed to be done wasn't done at the time it should have been (due to your mistake), and he had no way to get in touch with you (due to your leaving your mobile at home while you went out for dinner.) And at point, most of us who manage people and have some self control would realize that yelling and cussing on a phone message would do nothing to resolve the problem quicker, and start thinking about how to fix the problem with the resources available at the time. There is always plenty of time after the disaster/problem/inconvenience is averted, when the pressure is reduced, to address the mistakes an employee made.