How2check balance on vodacom without having simcard in a phone/logging onto website

Hi,

I live in a townhouse complex that has an intercom at the gate which is used to call people if you press the unit number on the intercom.

It takes a simcard which obviously requires airtime balance to be loaded in order to call the tenants.

The frustration comes in when the airtime is up and the intercom just doesn't work.

What I want to know if there is a way to receive a notification to a different number if the airtime balance is low?

Or if there is some script that we can install on a PC and run it once a day to check the airtime? If it is low I can create some program to email it the relevant parties to load new airtime.

Thanks