PAYING FOR SOMETHING I DID NOT AGREE TO

I have been with Vodacom for more than 10 years and i never experience such, their sales department called me for an upgrade on my home internet which i agreed to only find out that a new line was activated without my knowledge. I have since lodged a query which was investigated, and they found that their salesperson was on the wrong. I have been paying for their wrongs for the past two months. They have since told me that they will send someone to come collect the router till today no one came. I called again yesterday, and they told me someone will call. I am very disappointed on how my query was handle hence, I resorted to writing to this platform.