over charge for no usage!!

I sent an email about invoices imposed in my account when I do not have any usage but the is a charge! all along I did not have any supported router but I did manage to buy a supported router and started to use it on 30/08/2020. may you please remove the "unlimited what what" on my account????? I have already complained about the July invoice of which you already charged me R80.00, for what since I do not have any usage??? now its the August invoice of over R200.00?? I still do not have any usage!!!! why am I being charged??? How many emails should I send before I get assisted? and guess what? when i woke up, my services where disconnected because of that!