The cold

It's around 3 degrees, and we woke this morning to find our boiler flashing. Unfortunately there is nothing to tell us what this means, and we don't have an emergency number for our letting agent. I've left a message (the apparently check their phone regularly at the weekend, but this doesn't seem to be the case) and written an email, but we've had no word. So I'm holed up in the living room with the electric heater, doing school prep and wondering how many times we'll have to boil the kettle to get enough hot water to wash in (by tomorrow I'm going to be in desperate need of a hair wash) . . . It's not a good state of affairs.