Tales from the Darkside - Season 4 Episode 9
Sorry, Right Number

Katie receives a mysterious phone call from a woman warning about her husbands death...but he isnt dead yet. Katie ignores the phone call, and her husband dies. At the funeral, a despairing Katie calls up herself...and finds herself talking to...herself. She tries to warn her past self, despite knowing that it wont do any good, then collapses in despair.