Depending on what valley you mean you live in... On the road over the hill? The only provider with a tower at the top of the hill is Vodafone at the top of the Ohope side, above where they benched it back at the top of the passing lanes. The Telecom towers are down the bottom of the hill (opposite the primary school at Ohope) and in Whakatane

Check this file to see locations:

http://dl.dropbox.com/u/22487235/fusion.html

You might find trying a Vodafone handset at your location is not a bad move.