This customer was complaining about false alarms from his electric fence after a building contractor repaired his brick wall.
Upon inspection, we found that one of the wires were covered in cement, while 2 more were completely encased by the wall. The contractor was giving instructions to not damage, cover or affect the fence in any way, however they disregarded the instructions and went ahead to do the wonderful work shown above.
As I said before, please inspect the work any contractor is doing on or around any of your security features, as something like this will render an electric fence pointless due to the constant false alarms, and if left unchecked will eventually damage the energizer itself.