MetroFibre ripping people off

I have complaint against MetroFibre, on the 4th of March 2025 a tech came to my unit to install fibre and told me the service would active after 24 hours , after 24 hours I still had no internet. I sent a request to one of their agents informing them that I have no internet. They informed me that they would look into it. Over a week later a 2nd tech was sent to my unit to come check the device. After he checked , he said I must give it 24 hours to be active. Only on the 15th of March was my internet activated. On 27 March 2025 I called them and even sent email asking them to fix my invoice as a week before an agent who works in the finance department asked me to please log another ticket once my service was active so they could fix the invoice. Today I got an invoice and I have Being charged tripple the amount of R1489.