My experience in the past is that when a phone number is not listed in the reservation, don't expect a phone call. If you purchase a ticket through a travel agent - good luck because chances are they listed their phone number, not yours. Likewise, a contact number at the destination is helpful for the ride home.

I have been alerted via text message on my cell phone.

As a matter of fact, twice last week I took a bump and when they rebooked me, I got a text message alerting me of the new flight times. High tech.