Can not be put through to the correct department

I am looking at getting uncapped WiFi for my home and tried contacting Telkom about options and pricing. I had initially called 081180, from their website, and after following the options I spoke to a guy called Riaan who said I needed to speak to the sales department, he said should I get cut off I should call 10213... I did get cut off so I then called 10213 as requested. Again following the options I spoke to a lady called Shivasthri who said I needed to speak to the LTE department and that I needed to call 081187. This number asks for a unique authentication code which I obviously do not have. I cannot understand why this process is not easier.