Change of ID Number

I have been to the call centre at Mimosa Mall no less than 3 times this year to change my ID Number to the bar coded ID Number - as you know the last 3 digits changed. The consultant does the necessary changes on the system, but for some reason head office does not apply the changes. I am very upset because as a result of this I cannot upgrade because they say my ID Number is incorrect. I have been a Vodacom customer since July 1997. Can someone please help me??<br> <br> Regards <br> <br> Anthony Oliver<br>