Rang the doorbell again today. Once again, no answer. I am figuring if this guy is really as "grumpy" as his neighbor made him out to be, he probably won't answer. I did leave a note for him with my phone number just in case. I am going to try again next weekend if I don't hear from him. After that I might have to wait until spring and go for a walk maybe on trash night and hope I bump into him outside.