Why are some of the posters surprised?
I was once house-sitting my boyfriends house while he was on a business trip. He really does live in the middle of nowhere, what's so strange about that (one poster was amazed by this). The house is in Wales, on a hill top, the nearest road is really far, no neighbours at all, the nearest village is also rather far.
Anyway, after a few nights there, I found three beer cans outside, nearby a window. Two empty, one had some left. Must have been some lager-loving fox or an alcoholic crow. The cans weren't there before. The house IS remote, no footpaths, no nothing. Whoever that was, was there for some reason and wasn't just passing by in the middle of the night.
Naturally, it freaked me out A LOT, I admit. I phoned the police, then left and went back home to mine.
My boyfriend has an alcoholic brother. Erratic, aggressive, not a nice person. I knew about him, but I've never met him at that point. Turns out, it was him there. The funny thing is, he was living in a city 4 hours drive from boyfriend's place. He came to see him, but saw me through the window and was watching me (I was dressed, if anyone wonders). Then he left. He never explained anything.
In a way I'm glad I didn't see him peering through the window at night, that seriously would have killed me, haha.
About police paying OP a visit because of the phone. I can believe it. I lived in a tiny Welsh coastal town before. The biggest crime there were teens stealing cans of coke. My brother's expensive bike got stolen. It was crime of the century there, police paid us multiple visits, started an investigation and even did a repeat visit after a month (!) to regretfully inform us that the bike wasn't found (very nice policeman, he seemed genuinely upset).