Martino was served Wednesday with the lawsuit filed by Sheldon Chrysler.
In the lawsuit, Chrysler accuses Martino of a "pattern of extreme and outrageous conduct" that he claims was a deliberate effort to cause him long-term emotional problems.
Martino is accused of leaving Chrysler a series of harassing and intimidating emails and phone calls. Chrysler states in the lawsuit that he and Martino had been friends for 20 years and Martino had knowledge of Chrysler's clinical depression and his fragile mental and emotional state.
He is asking for at least $15,000 in compensation.
Martino told 9NEWS on Wednesday that Chrysler was a frequent caller to his radio show and that he had tried to help him through the years.
Martino says the allegations are not true and that as a public person he is "powerless" to stop lawsuits against him.
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