Help desk Service

Yesterday I had a new DWR-720/PW replacement for my fixed line delivered. Box contained absolute minimal of instructions including confusing installation of SIM or Micro-SIM. Assembled as per instructions but no signal. This morning my fixed line was cut off but I still have no signal. Telkom Help Line advises that due to major system problem they only have a few agents available and a long wait could be anticipated - which I am not prepared to wait due to expense of cell charges. Just need some simple help !!!