Lewis’ Lumber Business

My Name is Lewis, I'm 16 years old and I decided this year (weekends and after school) I would start a business that would benefit the local community and hopefully make a profitable return.  

I live in a small village where many of the houses have coal fires or log burners, many of these home owners rely on deliveries from merchants miles away, so straight away I'm saving costs by being located in the centre of the village and also I would buy reject wood from the saw mill to prevent waste. Everything was going great, I bought a chainsaw, built a log splitter, advertised and started to get orders. My business started to get profitable! but soon after people saw or heard about what I was doing they started helping them selves to wood stored in the barn, this soon escalated and now I’m struggling to make a profit. I have tried everything but being located in the middle of the village, next to a swimming pool car park and with no funds left theres a limit to what I can do. Should I cut my losses and sell my chainsaw?. I’m hoping with £200 I can get a CCTV system and anti-climb paint. Thanks,Lewis Maddison-Entrepreneur