Pathetic Service from Vodacom

I just received a call from an agent Jabulile Tshabalala who was extremely rude to me. Vodacom has not been debiting me and i was totally unaware , they even called me two weeks back and migrated the same contract so i did not know that i was in arrears. Jabulile was shouting and speaking over me and i advised her many times that she is being rude, she even had the audacity to tell me because I'm a Quality Analyst i'm telling her how to do her job, she said that i'm owing them money and i'm shouting at her. The agent was beyond arrogant and did not assist me in any way. I asked to speak to her manager which she said was in a meeting, i then asked for any other manager to which she said was unavailable. I am extremely upset with Vodacom and how unprofessional their agents are, i will not recommend Vodacom to any of my friends or family, they do not communicate anything and i haven't received any billing to date except a text stating that i am in arrears. Pathetic service from a big cellular brand.