Boiler fixed?

Woohahahaha!!!! Got it fixed??? You got to be the funniest at home!
Honestly my landlord is a decent bloke. But his builders are the worst cowboys you can get!
Yesterday a carpenter came over to cut up the kitchen work top. This was a decent guy. Nice chap, did his work. Even preferred to do his work BEFORE getting the coffee I offered.
After that I called the landlord to say it was done and the plumber could come over. So I don't hear from the landlord until the end of the day, when he returns my calls. He asked me if this plumber had called me back, and I said "are you kidding me? ofcourse he hasn't!". So the landlord gets pissed off as well, and decides to give him a bullocking and have him call me back. A few minutes later he calls back and tells me he left a message on his phone to call me back, which by the way he still hasn't. The landlord stated that he should be able to come around this morning or at least today as a minimum. Ofcourse he won't. I know this guy longer than today...
He is doing the same thing he did when we had a leak. Show up a couple of times. Spend 5 minutes looking around, and leave without having done a bloody thing. And charging for each time he shows up. He is just conning the landlord, and my flatmate and I suffer the consequences.
I can see coming that he shows up tomorrow (not today), look at the, now accessible, boiler, say that he needs parts (or needs to replace the whole damn unit), and comes back a week later to finish the job. Easy money...!
Mean time my flatmate run the risk of being poisoned by carbon monoxide, or worse, having a gas leak that could blow up the whole building!
Another thing that points to this guy being a crook, is that he claims he checked the gas installation when he was working on the leak (ofcourse I asked a copy of the certificate, which should be next to the boiler, but I haven't received it yet). Now I wonder how he can check the boiler, when he can't even access it!!!!

Maybe my flatmate is right. Maybe it is best to get your own house. That way you are boss of what happens in and around the house, and you can fire builders at will, any time you want.