Dispute on revised billing query and no correlation amongst different departments within Vodacom

Previously I reported about an exhorbitant account issued by Vodacom to me. My account was suspended by Vodacom, however I was billed for services I had not received( incl Fibre). After reporting the matter via Hello Peter, Mr Ganca indicated he passed a credit of R11871.35 to me. The amount outstanding was R3756,39. I was satisfied with the revised billing. An arrangement was made with Vodacom Collections Department to pay the outstanding amount in 3 months. The three month grace period would lapse at end of October 2022. This morning I received a draft summons which indicated that the amount outstanding now stands at R7110.34 . When I phoned the Collections Department to ascertain the discrepancy, the call centre agent indicated breach of agreement and that is the new amount outstanding. When I indicated I had a revised billing from the Collections department she was not prepared to listen to my version. When I asked her for her name and supervisor or managers details she put phone down on me. I had paid R2000 thusfar and an amount of R1756,39 is outstanding to be paid at the end of October. However, with this new inflated bill I have received I am not sure which Vodacom bill is reflective of the correct amount to be paid. There is clearly no correlation or communication between the Subscriber Collections Dept, Legal Dept and the Customer Liaison Department. I hope that the management at Vodacom address this shortcoming and send me the correct revised bill as I am clearly confused as to which amount to pay. I cant wait to settle my Vodacom account and close it in totality. I had been a loyal Vodacom subscriber for approximately 20 years but this is how I have been treated.