We had some issues at one time at our cabin. After quite a bit of research, we bought some cellular security cams off amazon, made by Reolink. Fantastic cameras, come with a solar panel to charge the batteries, and take a sim card from T mobile, I think they have a couple other cell companies they work with as well. I can pull up every camera we have now on my phone, I get instant notification if movement is detected, IR so night vision is great, two way audio as well. They have a model that tilts and pans now, , just ordered one to put on the front of the cabin. Reg cams were around $240 when we got them, I believe they are less expensive now. The pan/tilt was $289 I think or somewhere around there. It arrives tomorrow, will get out maybe this weekend to put it up.
Can't recommend them enough. No wires, and the solar chargers have never went under 87% battery charge in the two years we have had them up. Sim card fee is $10 a month per camera, cheap insurance and peace of mind.
Not much worse than a thief, glad your situation seemed to have worked out, hopefully they get more than a slap on the wrist.