how to get interview notification and scheduling

[synnfusion 0]

Hello all, my fiance's application has been sent to the NVC and we're awaiting notification that it has been sent to the Guangzhou consulate in China. My fiance explained to me that in China where she lives you must have a phone number in order to receive mail (something about mail being dropped in nearby postal boxes and notification is sent via phone number on exactly where to find it). We submitted a phone number with our application but her phone number has recently changed. So I sent an email request for a phone number change to the NVC with an explanation of why it was important. But in case the changed is not processed fast enough I have a couple of questions:

1. Will she be able to contact the Guangzhou consulate directly and inquire on the status of her notification or schedule an interview? Or is it absolutely required that she receive the notification by snail mail?

 

2. If she must receive the notification by snail mail, then will she be able to contact the consulate, change the phone number with them and possibly receive a new notification in case she missed the first?

[LivFavor 17]

I called the NVC after about 2 weeks after getting the approval from USCIS and they gave me my case number. From there on, I just checked the status on https://ceac.state.gov/ceacstattracker/status.aspx