BIS problem for 2 weeks

I have been contacting Vodacom Call centre number of times to sort out the BIS problem my mother accrued but all they do is tell me they will sort out the problem. then they send me an sms stating the problem is sorted but when I go to BBM or Whatsapp it doesn't work!! today (20/2/2016) the B**** told me that all there side is done and working and that she can not help me at all!!! this is the first time I hear a call centre agent tell a customer they can not help them!! pathetic service from VODACOM!!!