Vox horrible service

My fibre to the home stopped working in the 8th of June 2023. I called them on the 9th of June with reference vox***7 and they said it was cancelled erroneously and the person i spoke to was Khanyiso. No assistance received. Called again and spoke to Jarrod with reference vox ***1 and still no assistance received. Called again on the 12th june and spoke to nishay with reference vox ***7. Ive sent them numerous emails and they never fixed my fibre. I paid them for june 2023 and they refused to refund me. So they cancelled erroneously and i said they can leave it cancelled as they are not fixing it. The contract i took was for 12 months and now they saying its 24 months. They are charging me a cancellation fee and charging me for no service in june and july 2023. The lady marlene from their collections office called mee yesterday and was extremely rude. They also collected their router and other hardware without any hesitation. This is unfair what their doing and i want to take this further.