Harassment for payment already made

A while back I posted about the same problem. I keep on getting txt messages and unsolicited voice messages about my account being arrears. Granted, Vodacom did come back to me even though a week later to ask me about the problem. The agent accessed my account and emailed me a copy of my statement of acount which shows that my account is up to date. <br> <br> But.....the harassing voice and txt messages have not stopped and it appears that they are increasing in frequency.<br> <br> Can somebody get the people to talk to the system to make sure your processes are more efficient.<br> <br> Come on Vodacom.....this is not world-class at all