homecare british gas- what if they cant fix it ?

hi ya ,

i have a homecare agreement with british gas - they are here trying to fix my boiler but they can't fix it - so what happens now ? The house has no heating / hotwater and it's freezing and it's been a couple of days . Do they give you a heater or something to help out ? as I can't stay in the house with it being this cold as I have arthritis, and I dont have any relatives / friends to go to - I'm wondering to go and buy a couple of heaters
so what happens now - do they just leave you like this ?