I've rented a condo for 7 years. This complex is a mix of owner-occupied units and rentals. A lot of people have dogs. My buzzer goes off at random times pretty often, at least a couple times a week, sometimes as late as 11pm. No one answers when I ask who it is, so I don't buzz whoever it is in. Today I got yelled at by neighbor for not letting her in after she was done walking her dog. She was apparently hitting all the buzzers for the building. She admitted she doesn't carry her keys or cell phone. When I asked her why she didn't buzz her own unit, so her partner could let her in, she didn't answer and just yelled at me again for not letting her in. She then started in on another building resident who was in the hallway, too. I simply said that if I'm not expecting someone and I get no answer through the intercom, I'm not letting anyone in. It would be much different if she had forgotten her keys and said so.
Any other condo/apartment dwellers with this problem?