No Service from Afrihost and Vuma

Currently in a nightmare. My banking details changed and I did not update them in time so my Fibre (Vumatel and Afrihost being my chosen ISP) was suspended. I was told to make a new order and a pay fast link would be sent for payment and my Fibre would be up an running. However, I am told by MY ISP "Afrihost" that they are not my ISP and the order has been made with another ISP. I am being told this while starring at my order on my laptop. I keep in telling them that I have been their customer for almost 2 years and that I made the order with them but the contact centre employee's insist that it's with another ISP. I was told to sent a proof of address and they would contact Vuma but I still haven't had some feedback. In the past 3 days I have spoken to 3 contact centre employee's who took me through the same process and still nothing. I just need to pay for my Fibre and be connected again. I don't understand why this is such a process. If I made a order with another ISP why can't I be told which ISP it is. Why doesn't your system show you which ISP I am with. I am sick of this back and for. On top of that I cannot contact Vuma myself.