Very outstanding poor service

I Can not believe the excellent poor service and how can Vodacom just decided to cancel a new prepaid number witch you apply for with your contract where you get 2 phones on one contract already gave all my family members and co workers the number and now it is gone who gave them the right to cancel the number as it was added in the store when I did the upgrade have been with vodacom since they started but think it's time to try MTN