You should have Discovery and all the other documentary channels for the price you are paying, most providers seem to ask now if you want Adult channels when taking a sub from them, some , but not all charge extra for them, you should speak with your provider and see why you have no Discovery, etc,, tell him you would like them added on at no extra cost, £90 a year is ok if you are getting a real good service and you are happy with it, but the documentary channels should be included, it is possible to get a good iptv service, but it usually takes a bit of looking, but a service that works great for some may not work well for others, as i have seen and been told by others.