Car break-in (x2)

One day near my then-workplace in Hillingdon my car had a side window broken in by a thief. I called the glass repair company who said someone would come to replace it from their Watford base, as they had no-one nearer that day.The next night, asleep at home in a different area of NW London, my car parked outside had yet another side window broken into, by yet another opportunistic thief. I called the glass replacement company..a repairman apparently was passing nearby, so was sent to me. We were both a bit confused when he arrived! He said, 'Didn't I repair this car's side window yesterday, but in Hillingdon..?! What are the chances of that?' Four years on, and my car has not had a window broken in again. Why those two days in a row? (different places, different thief) And why that same repairman?