Vodacom...still not getting my account info right.

Today i received a PTP sms from vodacom. I have to reply within 5 days... This is yet again my issue with incompetant staff which CANNOT carry out a simple task. I had an issue 1 month ago regarding my account. I never receive the invoices or statments from them, in order to pay my account. 1 month ago i spoke to 3 THREE!!! of vodacom staff to simply CHANGE MY EMAIL ADDRESS so i can receive statements in order to be able to pay my account. Still this problem presists. What does one have to do more to get the right info changed on your account to receive statments. Now you get PTP sms's and before you know it...your phone is suspended. Its really rediculous to sit with this kind issue when you have to deal with people who cannot carry out a simple simple simple task...really...