Incorrect package loaded on my Vodacom Contract

As per telephonic conversations with more than 3 Vodacom call centre consultants, I have stated that I am not at all pleased when I noted that I was debited with R498-00 on 01 April 2020. On 14th February I received a call from Madura who stated that she is calling from Vodacom and she could give me an upgrade on my existing contract with a cellphone: Huawei Y5 lite. I agreed to only an upgrade of my existing contract and an instalment of R230 per month. The 1st Consultant (from Vodacom Call Centre) advised me that the high monthly instalment debit order was because there was another cellphone number/sim attached to my contract. This was not discussed or agreed upon and completely unnecessary as I am a housewife and can only afford a very low debit order amount. This I did state to Madura. Ayanda, the Team Leader from *** was very helpful and he put the necessary history notes of my call on record. He then put me through to Accounts Deparment and I spoke to Andy. Andy tried to contact Madura, but there was no answer. He sent me the reference number that I needed as I am instructing my bank to reverse the incorrect amount that was debited to my account. As a loyal client of Vodacom for many years I am very disappointed in the service that I was given. At my 7th attempt I managed to speak to Pamela, but was cut-off again. Please correct my account as I am not willing to pay for a service I did not agree to and have no use for. I have paid the R230 to date as promised every month. I visited the Vodacom branch in KC and they said they cannot assist as all branches are outsourced to different companies. I had to then call ***(Vodacom Sales/Mondo/Rewards) Mary Loo from Mondo reassured me that this matter will be escalated. She was going to refer to Suhana.I have heard nothing further from them and now they have blocked my phone completely. I would like to warn all not to accept any promotions from Mondo or Vodacom as they load incorrect packages on your name and I do not trust them at all. Its unprofessional that my account has not been rectified by now and will definitely not do any dealings with them again. If anybody ever had a similar experience please let me know what I can do next. Thans