Vox Telecom will not, can not, assist with 3 week downtime.

I have experienced a terrible internet signal for the past 3 weeks. I make every monthly payment yet cannot get thorough service form Vox. Not a single technician I spoke to could identify the problem nor recommend a solution. I have not even got an answer on how they intend to resolve the problem. I am going to cancel my contract and recommend that ant home user looking for internet look elsewhere as I regret ever signing up with them.