bad attitude for a guy called Karabo Monare from legal department

I got a call from Vodacom saying I owe them and I ask the guy called Karabo I asked him which month owe he try to come up with reasons that did not make then out of the blue he said I didn't pay September I asked how come all of sudden in February I owe a month of September then I said I have paid I can bring proof he hangs up and then block my phone from calling I found it very bad attitude and its makes me angry how he handle the matter now my phone is block from calling I am very angry at Vodacom this really unprofessional for Vodacom and even this guy Karabo he thinks Vodacom belongs to his family