Terreble becouse i cant even get hold of them they are busy ruining my credit score i need help i

I was offered a decoder by on airtv they say its a pay as u use but i received my decoder i strunggle to connect it i didnt use it even a single day so i was like i am not paying since i didnt use it but they attempt the Debt order n it decline now i check my credit score it very bad becouse of them i owe R4500 from March 2026 till oct i am like how 😭😭