Netstar miscommunication

I'm so disappointed with Netstar. We recently installed their tracking device and when the sales lady called she said installation is R1199 and the monthly fee will be R169. The debit date was supposed to be on the 28th of every month. When I check online, they say installation is R1999, monthly fee is R169 and the debit date is the 01st of every month. I tried calling and I spent more than 40 minutes on a call waiting for a consultant after the switch board lady transferred my call. Currently we don't know what to do because we wanted the call record to confirm what the sales lady said. We have sent an email but we don't even know if it was received because there was not even an automated reply to show it was received. Now I wonder if you call and you have any emergency, if they will help or you will be on your own.