intermittant internet service

I have written emails to Support technicians to check into the problem of why I don't have Wi Fi. I have refused to pay for tardy service. After numerous attempts to request cancellation of service I have been met with check this do this and it still ends up working for a day or two and fails. I had to go 50 km to be able to conduct a Skype meeting as I wasn't able to do it in my home due to a failure of the internet system . I am fed up with the bad service and want this equipment out of my house. Yes I will admit there was a replacement of both modems but still I have problems with the internet. This evening I was unable to Skype my wife This has happened on numerous occasions Vox you have breached the contract and cannot provide me with a decent internet connection. I am fed up .