Vodacom to not call their customers

I would like someone to call me to discuss the way forward. I tried calling collections, but the machine says my number does not exist – it does because I’m currently using it, but anyway. Without the number the machine won’t put me through. Very very frustrating. I have requested a call back from the vodacom website, but have not received a call. I have sent emails to more than one of their contacts and still nothing.