@Laura Williams
Couple things...
First, can you change your thread title to "deceived by crooked handyman" one of the reasons contractors get a bad rep is because in a situation like this, where that man doesn't deserve any right to be labeled a contractor, he is thrown into our field and gives us a bad name. That guy is a handyman plan and simple. I once hired a handyman, twice actually, and both times he couldn't keep up with my pace or work load. Handyman like to take their time and only work a couple hours a day. They do best with small jobs like switching out a ceiling fan, or installing a new faucet. Large jobs like painting and tile work they can't manage. Why should he spent day after day working on your job when he can just go install a ceiling fan and make a buck or two in cash on the spot. That's why your job took so long, especially if he is on drugs. He is more worried about getting cash that day rather than doing your job and spending days without cash. So everyone who reads this remember that handyman are great for handyman tasks. Anything larger than a few hours isn't meant for a handyman.
Second,
I understand that he came highly recommended from several other individuals who used him but did you vet him yourself? If everything checked out and you suspect drug use mid way through your job than that's probably what happened. Did he finish the work 100%? Did you pay him everything agreed upon? You said this was done before he even knew how much money he was getting, maybe he just expected to be stiffed because he knows he screwed you over with shotty work because he is on drugs. Future reference demand a drug test on the spot, if denied then fire immediately. Also all the extensions should not have been given. He took advantage of you compassion and kindness. You wanted to give him the benefit of the doubt because he came highly recommended from others but fact is that he lost it with your job. I have came up over my deadline on a handful of jobs in my career. Each and every time I gave my client my clients the reasons why, employees quit, fired or didn't show, I underestimated the time needed, ran into issues with material delivery, doesn't matter the reason I always let my clients know and gave them a new deadline, which on the second time around I would 100% make sure I made. I even have a clause in my contracts giving money back to my clients if i fail to meet my deadline. That clause is for your protection so maybe you can keep that in mind for future. After the first time you saw a decline in his demeanor, work, appearance anything you should have known it wouldn't have gotten any better with more time. Extensions are just giving him time to think of more excuses for why it still isn't done. Stick to the contract if he doesn't make the deadline and doesn't come to you in advance with quality reasons why and owning up to his part he played then terminate agreement and pay for what was completed.
This doesn't seem like a scenario where you were trying to be cheap and save money or didn't properly vet this guy. He came highly recommended by several people which is unfortunate that this happened to you. Like a few other people said there are two sides to every story but I highly doubt his story holds any weight. Anyone that has the nerve to pour cement down your drain pipes has some serious problems and zero respect for ownership of anything. After all of this I hope that you take from it to stick to your gut. If your suspected something was wrong early on he should have been terminated on the spot. If he needed one extensions and had a bunch of excuses then you should have terminated him then. Drug use is nothing to play with and makes people very unstable. But I don't want this to be another screwed by my contractor story because that isn't the case here. A single handyman dropped the ball. Not a reputable company who performs large jobs and handles hundreds of thousands of dollars. But the problem is that no one wants to hire those type of companies because they come at a higher expense then the single handyman or small remodeling company. I'm not saying you are wrong for hiring him but this is what happens when you don't hire someone with the proper credentials, license, insurance etc. If he was licensed you could contact them and get some help. But in this situation there is really nothing you can take from him. You could leave reviews and civil suits etc etc but guys like that will just operate with cash for years and years until it goes away. I wish you the best and hope you find a good fix for this! No one deserves to have this happen to them no matter what the situation is!!!