Cancelled data without my request

In February 2015 I phoned Vodacom to migrate my contract to Red Advantage. On my current contract at the time of my request, I had a 1 GB bundle and an Ad-Hoc of 1 GB. Upon my request I asked that the bundles be cancelled with the inception of the NEW Red Advantage plan. However, this was done with immediate effect and HUGE costs incurred due to the fact that the person handling my request did not do what I asked.<br> I received a cellphone invoice for R3400+! I am NOT paying this unless my account is fixed. I specifically ASKED to have the bundles cancelled with the INCEPTION of the new package? Why on earth would I have it cancelled with immediate effect?<br> <br> <br> Can someone please fix this and give me feedback please?<br>