Just because you send a text to me, it doesn't mean I will read it instantly.
Just because you send a text to me, it doesn't mean I will treat it as important.
Just because I read your text, it doesn't mean I wll regard it as urgent or important or act on it instantly.
If it's urgent or important use the text machine to speak to me.
"But I sent you a text." is not a viable excuse or reason.