I just started a new customer. I asked her why she was changing services. She said, the service wasn't working. Also, recently she happened to walk across to the neighbors house right before her service was due. She was inside he neighbors home, looking at her house, when the service showed up. the man rang the bell, and did not get an answer. He sprayed around the front door, hung the invoice on the knob and left. What other reasons have you heard?