Fibre Sky Link from hell

The company used a 3rd party service provider to sell they're service(Linteg). The Linteg agent said you get a free usage when installed and activated. Installation of hardware was done early July and the fibre was only activated on the 19th of July. On the 24th of July they have already sent a invoice for R440 for usage that covered 16 days on the 31st of July. I got cut off and got an email stating so. I called the company Fibre Sky last week on the 2nd or 3rd August. Spoke to they're staff whom I liased the story, she them said she'll get management to call me back. That didn't happen. I called again today and spoke to Tiaan who sounded not interested in my matter and just wanted to tell me that I must just pay and that's it. Firstly he died not acknowledge my misinformation done by they're service provider(Linteg) secondly he dropped the phone on me whilst I was still speaking, because I was expressing my dissatisfaction. I now would like them to get they're hardware out of my house and allow me to deal with a professional service provider.