Vodacom Accounts

I am with Vodacom for almost 5 years and with current contract for 2 years. I had the highest portfolio and it was downgraded to bare minimum without giving an substantial information. I have a good credit history and all my bills are through a debit order on first day of the month. I have been approaching Vodacom stores and dealers from past two weeks and nothing has changed. I never had complains with Vodacom before but this is the most terrible service I have witnessed in past 5 years and that is because of some terrible accounts team working in the background. I am considering to port my number to some other Provider if this does not get resolved soon.