So two days ago, I get back from dropping the kids off at school to find that there's a large wet stain on the ceiling of the hall. The carpet in the bottom of the boiler cupboard is sodden.
Conclusion: the boiler is leaking.
It turns out that their man ins only a plumber and is not CORGI registered and can't work on gas boilers. So he needs to escalate it to a heating engineer. He does this at ~3pm two days ago, saying (to me) that someone should phone me to arrange a time for the engineer to call. I pass this on to Jessica.
After a couple of hours, no phone call. So Jessica chases them. Nothing.
The next morning, I let Jessica know that I've heard nothing, and she chases again. A little later I get a phone call from a guy from another service company. He tells me that they'll send someone "tomorrow" (i.e. today). Given that we're had no heating for more than 24 hours now, I ask if there's any chance of it being the same day (yesterday) He very officiously tells me that they guarantee a next day call out service and they only got the fax this morning, and the engineer will phone me between 8-8:30 to arrange a time to call.