Unable to use my phone number

A few month ago, my phone number ( ********** 222) was used by an ******** sim swop. After eventually getting Vodacom to stop the usage and change the number, I am still not able to use this phone 2 months after the problem was resolved. I have, on 2 occasions been into the Vodacom centre at Canal Walk, Cape Town and waited with my number in hand for more than 30 minutes, but was till not helped. How do I get this phone number unblocked without having to book off half a day to deal with a very slow and inefficient Vodacom centre over a Vodacom ***** error? To make it worse, I am still billed each month for Data Sim cards which were removed from the system 4 months ago.