As usual terrible customer service given

It's been over a week that I am trying to get feedback from vodacom. I've done two premature cancelations. The reason for this is because I am no longer employed. I Followed the instructions on the quote forms and emailed all necessary documents. On my app it still shows I owe an amount for the end of August. I've paid up two contracts. When I call the cancelation department as usual there know nothing. I spoke to an agent name noluthando yesterday. She asked me to call the back office who usually is in charge of updating. I then explained to her that I am the customer. It's not my duty going and contacting each department because someone was too *********** to complete they job. I did what was expected of me. I paid my contract. Used my acc number as the subject, attached my ID as well as the quote form which I filled out stating that I want my humber to be prepaid. She then said she will contact them and calm me Back.It upsets me so much as I am a customer with vodacom for any many years and up to this date they customer service is still so disappointing. They haven't improved at all. There's no sense of urgency what so ever or feedback to customers. I've paid my two contracts. The premature cancelation quote was valid for 11 days on the 2nd day I paid. I expect the app to be sorted out asap so that the amounts are cleared. I have another 4 contracts that is still existing and there need to pay those accounts monthly. Noluthando had promise to let me know the outcome. She hasent called me to date. All calls are recorded so I expect this be taken up further and for someone to contact me asap.