Completely *********** staff

For the last 22 years I've had the same number on contract with vodacom. For the last 2 years I have had serious issues with vodacom regarding my monthly bill and statements. Complaint upon complaint with no results. Tried again this morning to resolve this matter as I am not receiving Invoices only statements. According to the vodacom consultant I owe R 1087 but the vodacom web site states I owe R 2357.90 The invoice on the vodacom app states I am R 165.72 in credit. No can someone please explain to me how it is possible to have 3 different amounts for the same month on the same account?????????? And when I get upset with consultant because she does not listen to what I am explaining to her, I get attitude. Vodacom you need to wake up and get competent staff.