Failer to serve

So four weeks later and multiple calls daily, I have still not been given a new router even though they have suggested that the router is probably the leading cause of the issue. They keep telling me it's working on that side but it's not! They have stopped calling me since I was told that my problem had been escalated to a new division [this is the second time it's been escalated]. I think it's just time to cancel my subscription. I would also like to claim back the month of unused data!