Vodacom poor customer service

I've had to contact Vodacom's customer service center and their insurance division on more than 8 occasions, and I've received conflicting and contradictory information from different agents. Upon signing a new contract at Vodacom Montana with Shawn, I enrolled for an accident damages assurance cover of R100, but it seems that the service center mistakenly captured the incorrect comprehensive insurance cover instead of the accidental damage cover. Consequently, I've been charged R731 for comprehensive insurance that I didn't sign up for. Despite contacting them multiple times, I have yet to see these charges removed or the invoice corrected to reflect the appropriate insurance cover. This level of service from Vodacom, including their insurance service center and customer service team, is unsatisfactory demonstrates incompetence. They even put me on hold for more 5mns, then drop my calls. The Shawn guy from the Montana Vodacom **** to be, told me that he has logged a query and when the call, only to found out that he did not.. so we are dealing with lies here, misleading us to sign new contract with misleading information