PAYMENT ARRANGEMENT

I am honestly at my wits end with this. I have a payment arrangement which I have honored. I get an sms saying I need to pay money by today but that is not the arrangement. I call the Call Center and speak to the least helpful call center agent in the world. I try and explain this arrangement to her and she does not understand what I am saying I asked to be transferred to credit management she tells me she cannot transfer me. MTN PLEASE WILL YOU tell me what is going on I don't have time to be sitting on the phone trying to explain what was agreed I honestly do not know what to do now. Just tell me when my contract ends as well so that I can move. I don't have time to be on hold, sending emails to your collections, getting on to hellopeter to complain as unfortunately this is the only way I seem to be getting help. PLEASE JUST TELL WHAT IS GOING ON NOW. I actually have a life outside of constantly been on the phone with MTN.