Mystery Solved!

oil & water.

Tried calling cs on her cell phone. No answer. Tried again later. Still no answer.

When she got home, I asked her if she had her cell phone.

Yes.
Is it on?
Yes, but I haven't been getting any calls.
I tried calling you several times.
I didn't hear it.
Did you check the volume on the ringer?
Yes, but it still doesn't work. I think that it's broken.
Let me take a look at it.

Upon examination, I find that the phone had been put in silent mode. I change the setting back to normal. Problem solved.

How did that happen? I didn't do it.

It certainly must have been the phone fairy, because cs is the only one that has possession of the phone.

oil & water = technology & cs