contract upgrade by vodacom staff

In September Vodacom deducted on my bank account more than they should and I went to find out what happened to find out that an upgrade on my contract was done without my concern and I launched a ***** complain. now in December trying to find out progress on my case to find out that again there was another upgrade in November which was also done without my concern. Now I'm sitting with two ***** case for the same issue from the-same company with my personal details liked to ***** star