Kartush, have you tried asking your DIL how she would prefer you to contact her and when?
Obviously, she is either busy and forgets to phone you back, or feels that your message was one that did not require a reply, whereas you did want her to phone back.
In my experience, this kind of situation is more about you and your DIL or whoever else you are trying to get in touch with having different views on what a phone is actually for then anything else.
If or when I don't get a reply when I phone someone I send them a text, either at once, if the matter is important, or a day or so later, saying something like this:
"I phoned because I really need to speak to you about (whatever it is) Please phone me when convenient but before the weekend, as I am worried/concerned/ need to make arrangements."
This usually works.
If I phone anyone because something important or terrible has happened I say so in the message I leave and in a subsequent text.
If you DIL still fails to respond and won't tell you how she wishes communication to be between you, you really have no option other than next time she bites your head of for not telling her things, saying nicely," Well, please tell me how to do so, when I phone you neither answer nor phone back"
Any form of communication only works if both the sender and the recipient agree on the rules.
I personally am infuriated by those whom I perhaps ask three questions in an e-mail, and they only reply to the first, leaving me to mail back twice to get the other replies I need,