Elite mobile and vadacom empty promises

Last year December I contacted vodacom to cancel a contract and was redirected to elite mobile. The consultant advised me that I should keep the contract and that I will save money on my other contracts I have with vodacom and that I will receive other added benefits on the contracts. Most of the promises made by the consultant were not carried out when I received my vodacom bill for January and February. I contacted vodacom customer service and even went to one of the vodacom shops. I was told by the consultant that this problem does not concern vadocom and that I should contact elite mobile. I contacted elite mobile last week to see if I can get a copy of the recording between myself and the consultant that I spoke to last year December. The took down my details and said someone will contact me. No one did. I have been a client of vadacom for years. I cannot understand why vodacom is unable to assist me in this situation. Afterall I am their client and not elite mobile's client. All I want is what was promised to me by the consultant I spoke to. So I need to review the recording of that day.