Vodacom is robbing me braod daylight 🤬

Hello Peter! Voda pm wants me to pay R2000 for a wifi bill that I agreed to pay R700 a month and I did. But vodacom should over charge me and make me pay R1200 how is that possible and when I want to speak to someone they make me speak to a online prompt but to harres me for R2000 every day that's okay but for them to hear my case is a problem.

So I would like you to ask them for documents stating why I owe them and I would like to see payment statements for the following years.

Thank you