Vodacom Poor Service

I did a telephonic upgrade, sim only red VIP unlimited minutes 50gb. Upgrade was incorrectly done. I queried and Vodacom listned to the voice calls and rules in my favour. However April25 and May25 I was double billed on my number. I have called numerious times and everytime Im promised credits will be passed and nothing happens.

Im requesting a manager to call me on ***, as this is the worst service ever from Vodacom