Disappointed with Vodacom

I took up a contract with Vodacom which included a phone, 1gig and 75 minutes. I was paying R229,00 every month, and on the 18th of August a female consultant from Vodacom(rewards dep) contacted me and explaining that the current plan that I am using has been discontinued, she offered me a migration option, and on the new plan I was going to receive 2gig of data and 100 minutes, and I just have to add R60,00 on my monthly instalment, which means I will pay R289,00 and she assured me that will be my new monthly instalment for my contract, however on the next debit order Vodacom debited R375,00 on my bank account instead of the R289,00 which we agreed on. After I contacted Vodacom customer services regarding the the above issue, and I asked them that I want to return to my old plan, and I also want a refund because of the September debit order, an incident was logged. Another female consultant contacted me regarding my query and I explained to her the situation, and she explained to me that the previous plan that I was using has been discontinued, she would like to offer me a new plan close to the amount(R229,00) I was paying. However the only plan available was for R279,00 which included, 1gig and 100 minutes and I agreed to that, she also assured me that will be the my new instalment starting from November, she refunded me the money for that incorrect debit order for October and she apologized on behalf of Vodacom. here is my new issue upon checking my statement for October apparently I have to pay R550 for migration and also my new instalment moved from R279,00 to R315,00. I contacted Vodacom again on the 2nd of November regarding the issue, I was told someone will contact me within 5 business working days to resolve the issue, now it's 9 days later still no call. Vodacom I never initiated any migration, you rewards team contacted me offered me a migration, which has caused me time and energy to contact Vodacom resolve issues which I never had, and were caused by you. Can you please adjust my monthly instalment(from R315,00 to R279,00) to the agreed one for this number ***. The migration fee has to go also I never initiated any migration, this has to be done before my next debit order which is the 20th of November.