Overcharged for my fibre subscription

Today(05 July 2022), I received the August statement. Again instead of being charged a subscription fee for the package I signed up for, the invoice reflects an amount of R1248. My previous line is still not cancelled and it’s been almost two months already since I logged the initial request to have the line cancelled. I will send an email to your CEO maybe he’ll be able to resolve this multiple line issue that you people are not competent enough to resolve.