Contract bangle issue

Five years ago I signed for a red select package contract. The package included a promotional phone with its own number. When I had financial constrains In April this year I downgraded and specifically asked for the primary number to be the one signed for the new 24 month contract not, the secondary phone . Instead, the consultant who helped me did the opposite. I've trying to correct this with Vodacom for the past 3 weeks, however I'm not getting any joy nor satisfaction. Instead I'm being sent from pillar to post . I just need them to cancel the contract on the secondary number and activate that to the primary number, unfortunately this seems like a mammoth task to them . My primary phone's CLIP has been deactivated because they cancelled the wrong number. To be truthful its frustrating because I've been using this number and the Vodacom network for the past 20 years .