I'm a ll with a very difficult tenant. He is very bad about contacting me with any maintained needed. He doesn't respond to emails or phone calls. He contacted me the other day to say the boiler wasn't working and he wasn't paying the rent until it's fixed, he said it stopped working a few weeks ago, and only told me the day the rent was due (it was late the last few months as well). I had the boiler fixed the same day. He says it's not fixed even though I have a letter from the plumber saying it is.
Anyway, he has told me he can't answer calls/emails because he works 9am to midnight in a pub. He has a dog, I let the dog live in the house because he said it wouldn't be alone for more than a couple of hours (he did have a girlfriend who was at home, she's since left). Now I don't believe he works as much as he says but I do know he works very long hours. I'm worried about the welfare of the dog. Should I try to do anything, if so what?