I am so sorry to hear about your loss. Right now I have been browsing these forums for a couple weeks thinking about setting up my first tank in many years, I took down my last one because I didn't want to deal with moving with it. Unfortunately, this hobby that can be so enjoyable, can become such a pain when life gets in the way, even when things are handled correctly.
I would at the very least get back whatever money you paid this guy, if you don't ask for damages in addition.