So much sympathy! We, both OAPs (Oh over 80) have had no reliable heating or hot water for over 6 weeks now - somewhat fed-up, its bee very cold. Apparently, we have simultaneously developed a fault or 2 in the boiler (cost us over £300 so far to have these fixed) but, oops! Now there must be a leak in the pipes underfloor.:( Snag - we have laminate floors downstairs - unimaginable expense (haven't got the funds to put the same down). We're fed-up and cold-enough as it is. Off to a holiday cottage on Sat. for a week and looking forward to warmth. We'll think about it when we get back.
Unfortunately we are owner-occupiers -not very rich ones - and all the L.A. grants to help with heating have ended. Perhaps we should go down to the Council offices wrapped in shawls..............
Back to yours - I second S-dave's advice. A yelling baby is a powerful argument. Good luck (sorry I sounded off, but it hasn't been easily liveable here).