You should ask them for email confirmation instead that was happening to me to!
Ugh, that's annoying. I usually get a call a day before but if they say a week and never call at all, that is not professional. Mention it to the office staff. You can say that you have trouble getting transportation or time to go or whatever and always want to know that the doctor is on the same page as the things in your planner. Or whatever, something like that. good luck dear
I'd just go to the ultrasound office and make the appointment if it's at the same building or call as soon as I get home