Telkom ****ming pple by charging more than necessary through hidden charges

Telkom is ****ming people with their debit order system. I missed a payment of R179 in March and I have been paying more than R400 every month. They keep saying there are charges and I ask how much I'm supposed to pay. I pay that amount and I'm told I have caught up with my payment of R179. The next month I reserve R250 for the debit then I get notification of failed debit bcoz they wanted to debit R300. So now I'm on a vicious cycle of paying an extra R270 every month bt my account is never settled. When I call they ll give an excuse like e other money is being charged by the collection department. I have been asking for my invoice to b sent to m since March but I never receive it. One agent will say on the system yo email is in capital letters and another will say it's not activated and another will say the system shows that I'm receiving emails. I regret I ever entered the doors of telkom