NO SERVICE

I just want to complain about the service what I do not get from them. This is going on from November last year what they try to get the extender working then it work for 4 days off again then I call them and try to get going. Then they say a specialist will call me and then they call me and then they try but they say cannot sort it out. A engineer will call me what they do not do will just see it is working. And then just for 3 days then the same story. So I so get sick for this now because they do not know what they are doing so I can say for the people stay away from them.