I'm just wondering and thinking of what is expected of an employee who could not show up for duty for one day due to illness, apart from a phone call or text is there another way out.

I was caught up in that line sometime ago after putting a call across to my immediate supervisor which She didn't take I sent a text and she called me to write her officially... I was confused and felt like does she really know my present state of health? And this is happening for the first time, don't I deserve the right to be pardoned for just one day after which was can start talking about formerly writing.

I request you kind suggestions and will appreciate your experience as to this subject.