^^^ This drives me nuts....
I had a situation a few years ago, where I was in a shopping centre lease
the kitchen exhaust was playing up, the exhaust system was one system for the entire building/complex, and had an automatic timing switch or something along the lines of that.
it had played up a few times over the past (note the building was 16 months old),
on one occassion it went down for 8-10 days straight,
imagine a kitchen full of ovens, deepfryers, grills, lights, heat lamps, plus middle of summer,
in 10 days, I made 30 calls, all ranging from secruity, secreatary, reception, operations manager, and noted the time and date of the calls,
My chef was getting dizzy spells, in fact I was surprised he didnt faint as I couldnt spend more then 5 mins in there, and by day 7, he was threatening to walk out of the job (which I dont blame him)
on approx day 3, and 6 and 9, the same operations manager who had very little technical knowledge came down, had a poke around, came back and said, people were looking at it,
it was only on day 9 or 10 that it actually got fixed,
I wrote a big whinge letter demanding compensation in the form of rent for a few months and two pages of dates and times of who I contacted and left msgs, up to 3 times per day, in the letter I also wrote that I had to turn customers away and cancel bookings
I received a response approx 6 weeks later after over 10 follow up emails for a response which in two or 3 lines said "we cannot confirm any of the details of your phone calls".
That was start of many other incidents that ultimately decided me in reassigning the lease