Account closed down in 2010 held against my name

I app**** for a line to be carried over from my mothers name to my own name on Sunday, 22/02/2015. I was declined by the system due to the fact that a mobile contract that was closed in 2010 is still reflecting on my name, thus 5 years later. According to law a account is to prescribe after a certain period of time and may not be held against any persons name thereafter by whichever company, this apparently isn't the case with Vodacom.The one thing that I don't understand though is that in 2013 I took out 2 contracts (1 x mobile and 1 x data) which was approved instantly without any problems. How is it then possible that two years later I get declined. I have got a perfect credit rating as per my ITC records and still Vodacom holds this account that was opened in 2004 as a negative against my name. I've been an Vodacom client all my life and I am utterly disappointed in the way I have almost been treated like some sort of *****/********. I am very strongly considering moving my current 2 accounts as well as the 4 accounts held my mother based on the treatment received. Utterly disappointed.