Upgrade of contract

Trying to upgrade one of my contracts for the last 3 days. The online service displayed a message that an existing Vodacom number cannot be ported. Eventually the online upgrade process completed and gave me a reference number and a message that confirmation call to follow. I phoned Vodacom and completed the process. Phoned yesterday to see the status of the upgrade and only to be told that someone will phone me. Phone again today, only to hear the same story.