Steve Dymond had rung 40 to 50 times in "desperate" attempts to become a guest on The Jeremy Kyle Show, an inquest into his death has heard.
The 63-year-old, from Portsmouth, Hampshire, is believed to have killed himself seven days after filming for the ITV show in May 2019.
He had taken a lie detector test for the programme after being accused of cheating on his partner, Jane Callaghan, from Gosport, Hampshire.
Winchester Coroner's Court heard that Mr Dymond died at his home from a combination of morphine overdose and left ventricular hypertrophy in his heart.
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