I have no words to describe my disappointment vodacom just ignores customer

I called vodacom advising them that when my son inserts WhatsApp bundle-his unable to use it. They gave various instructions how to set the internet connection. Nothing worked. A day later I received an sms that they have credited my son with a gig as s goodwill gesture. The same thing happened and when I logged or try to log call the option doesn’t allow you to speak to someone. I tried tobi who is of no use... refer me to a human agent who is also of no use. Please can someone help.. his loosing out on the bundle