Hidden Charges

I called to have phone line installed at my home and expected to be charged installation fees. When I was kindly told by an agent that I do not have to pay installation as my credit rating is sufficient, didn't make sense to me but that's what she said. When my first invoice arrived it was R1100 for a service that is supposed to cost me about R200 a month. I have no detailed invoice to look at to see where the R1100 bill comes from nor have i received an explanation for this bill. It's quite clear how *********** Telkom is.