Thanks for the replies!
I'm in the UK and yes, our house is the only one for about a mile (we're out in the sticks) and we're next to a public footpath frequented by thirsty ramblers. The pub is actually just over a mile away in the nearest village!
I've just this minute had an email from Google, so maybe once I've read it, it'll all be sorted out....hmmmm.
EDIT: Nope, no good, still can't 'report a problem' (greyed out). I think I'll give up. Or maybe I could make some money flogging cans of lager...there's an idea!