Incorrect amount billed

I've been busy with rain for over a month now,, i was Told that you've amended my debit order payment for Aug as i didn't have Network for more than 2 week, onyl to find that your Router is not working this is the 2nd Router by the way. Now you have deducted R529 please reverse i don't want you to amend cause you're useless you can't manage your billing department. And I've been asking you to cancel the service I'll ask my Family to cancel aswell,, cause your service is pathetic. I mean really I've been busy with you since when this is not fair i just hate Rain for real. Again i was trying to order they're SIM cards, still not winning like I'm fedup. If you can't reverse pls cancel and I'll reverse it myself. And I have email as proof that states that i was promised that they will debit less not full amount mxm.