I think I’d be inclined towards a note through the door, something like “I hope you enjoyed the pizza, now I know where you live I’m going to enjoy making your life a total misery in future, unless you put the money back where you found it”
There’s all sorts of remote retribution, like ordering all sorts of stuff from various places, like taxis, for example, and directing it all to his address.
😈
Looking at the photos, if it had happened to me, I could genuinely call on the services of a bunch of blokes not dissimilar to those guys; my brother and sis-in-law are members of a bike club based on an airfield not too far away, most of whose members were and are serving and ex-military; a pretty scary-looking bunch if you don’t know them… 😉