Vox and Vumatel have failed our family

I have literary given up on Vox and Vumatel, Vox says it's Vumatel and Vumatel says it's Vox. Our fibre line is still not active and it's more than a month later and we as a family still have limited productivity as errors continue. Vox even failed to deliver the new router to our correct address after I told them in advance they had given the courier company the wrong address but we do have our own router. Vumatel say they've done their part Vox says No! there is still pending actions from Vumatel. So I've exhausted all my options and have no idea how to resolve this matter.