Disgruntled customer

Vodacom took it upon themselves to suspend my line because I supposedly owe them money. They have also decided to debit my account twice on a date that suits them. I have called numerous times to ask them to reactivate my line as I don’t owe them money and that my debit order has to run on a specific date. Each time I call, a consultant tells me that the matter will be resolved within 24 hours yet I’m still unable to make calls or make use of my data.