problem tenant

[Jeffrey K.]

I have a girl living in one of my units. She is around 30 years old, single, has a good job, and a credit score over 800. This is a nice one bedroom apt. We just totally redid the building she lives in. The problem is she keeps calling me about stupid things. I want to know about plumbing problems, but she calls me about things like the temperature of the water during different cycles in the coin washing machine, or another tenant putting her garbage can infront of her garage door, or that her gas bill seems high and I had to explain to her that it is not just the gas stove, but also her water heater. How do I get her to call just when it is important, or is this a lost cause?