Hi ghostlady,
I too remember having prblems with this part when I played the game.
Have you checked the phone before and found that it is not working?
Have you talked to somebody, I think the woman, about it being inoperative?
Have you done everything for that day like looking and follwing Cyrus, fixing telescope, searching all the areas?
After you've done everything outside when you get back to the house, you should see the strange car of the repairman.
Good luck!
MaG