RIDICULOUS DEMANDS

I app**** for fibre in October 2020. 8 days later, no response so I emailed to cancel. Then took out a contract with Vox. 2 months later on the 24th December 2020, I get an email stating my order has been accepted. My Vox fibre was already installed way before. Since then this company has been pestering me to pay invoices for a service that they do not provide. I even spoke with one of their collections agents who was supposedly meant to get back to me. Still no response. And today I get an email to state that they are listing a default against my name. What is wrong with Webafrica. Are they trying to ****** money from people?