I'm in desperate need of some help, our gas safe guy has come out to replace an old boiler that broke, he's connected the water up and drain and fitted it to the wall, but now we can't get hold of him and he's turned off his phone, it's been nearly 3 weeks without any heating!! I have 2 young children in the house who keep getting ill and we have no heating at all, does any of you kind people know anyone who could help us?