Pathetic service

Sometime in May a Vodacom consultant called to review my account and to add value added service with no additional charge. To my shock, there was an additional R450 to my account statement. I have since called Vodacom yo look into my account and give me credit on my account but I've been put from pillar to post to no avail. I've called them on give occasions relating the same story to different consultants and they promised to get someone to contact me but nothing happened. I've been with Vodacom since 2001 and for the past 23 years them, I've never experienced such levels of *********** stuff and pathetic service. No one takes accountability. I've tried to relate my experiences to someone superior but either I'll hold on forever or I'll get cut off. This experience has made me to review my next contract renewal, I guess it's time to explore other service providers.