Data despute

Telkom loaded data on my phone which I did not ask for after I have done my upgrade,I called them and logged a case saying that I never asked for the add on data case reference nr ***7.they then called me on 06/10/2015 and said that the despute has been resolved and that it was their mistake and that I will receive a full refund.The consultant asked me if I want the refund loaded on my account then my installment will be less where I rep**** that the money should be deposited in my bank account where the consultant agreed that the money will be deposited in my account.Till to date nothing was received.On 15/10/21 I called telkom again wher a lady by the name of noniko said that the money was loaded on my account and that was not the agreement.I requested the recordings of the that conversation but I was informed that it is a very long procedure.if they can only listen to the recordings they will see once again telkom gives very poor customer experience.I want my money immediately deposited in my account because they didn't have a problem taking it.