Receive no calls and keep on phoning them and stil

Overnight I could not received any sms or phone calls. I can make calls but nobody can phone me. It happened that the school with my child couldn't even reach me. I phoned the call centre so many times and it is still not fixed. So after so many frustrating years with Vodacom I will contact Cell C. This is he last. Vodacom can make a joke out some else. I AM DONE WITH THEM.