This movie was about a woman who kept receiving harassing phone calls, calls of a sexual nature. Somehow she is able to find out who the caller is. He is married. She goes to his house and when he calls her again the mans wife is listening on the phone and hears all the disgusting things her husband is saying to the woman.
I think I saw this movie in the 90’s. That’s all I can remember about it. I just remember how shocked the obscene caller was when he realized his wife had heard him.