Unauthorised Contract and no data benefits

Vodacom retentions completed an unauthorised change to my wifes contract. The department had called me to offer a deal to upgrade my contract to a new plan with better benefits since their plans were changing. The upgrade was finalised but all previous and promised data benefits had been removed. In the process they had attempted to also upgrade my wifes contract without consent from my wife and removed all her pervious benefits as well. In essence we are now both paying more with less value.

When customer services was contacted, they could not assist and had to transfer me to cancellations. However, after being transfered to 3 different departments and then to the retentions departmen, they indicated that it was and error but they cannot change it until the contact period expires... In 2 years! After communicating my dissatisfaction, the agent had then escalated the matter for investigation. They indicated that I will receive a response within 2 to 3 days. A week later, I have still not received a response or resolution. Our accounts are still being billed for a contract we are not happy with and didn't accept.

Vodacom, please get back to me!