CUSTOMER SERVICE IS VERY POOR

My Vodacom acc was in arrears the previous month however I made a payment as instructed by a lady I spoke to at the Call Centre who was very helpful on the 6th of Feb 2015.Today without any notification or warning my line is suddenly suspended.I called Vodacom and spoke to MEGAN LUNDALL.This MEGAN LUNDALL tells me my account is in arrears with the same amount I had paid up which also reflects on my Bank Statement on the 6th of February 2015.I inform her of that fact and she tells me to send them a Proof Of Payment in which Im prepared to do.. I then ask her how long will my line be up and running as I wasnt given any notification or warning about this. She tells me it will take about 4hours.I ask her if there is anything else that we can do to speed up the process and she yells saying that theres nothing else she can do, she already advised me to send proof of payment. I ask for the address then she literally shouts the email address.I ask her to tone it down and ask her why she is shouting, she tells me she isnt shouting.I demand an apology and she says Im sorry that you are under the assumption that Im shouting at you.I was NOT assuming anything.Her attitude is unprofessional.