Sounds like they have fitted incompatable switches, they need a different type to incandescent bulbs.Agree with Whitespirit. You can still but incandescent bulbs, just as long as they are "rough service" ones. Still available in popular sizes like 100w, 150w etc.
Where I work, we have corridors where the lights come on via PIR sensors in the ceiling (for about a minute or so) Low energy bulbs last, next to no time in the lampholders, whereas 40w incandescent bulbs last for months.
