Quick update - I get five networks listed, but only one is not password protected, so I use that. I hope it's my neighbours!
I am fairly confident that it is, as it's the only one showing 5 bars on the signal strength meter but (oddly?) this drops to 2-3 bars when connected.
Just as well, the garbage service I'm getting from Madasafish is very much akin to money under false pretences (two line drops just typing this, but when I complain, they always claim it's my equipment).