Vodacom at their worst service ever!!!

On the 31 of January I put a post on HelloPeter about a problem I have with Vodacom's inability to resolve a cancelled account problem. They rep**** with a very friendly message that the matter would be referred to a consultant to investigate. It has been more than two weeks and still no resolve. The incompetence from Vodacom to resolve this matter is shocking. What else can I do, since they clearly have no intention to fix their mistake???