An appeal by former African National Congress chief whip, Tony Yengeni, against what he considers to be a 'harsh and severe' four-year jail sentence for fraud was postponed indefinitely on Monday. Yengeni was sentenced in March 2003 after pleading guilty to defrauding parliament by failing to disclose a near 50% discount he received on a luxury 4X4 Mercedes-Benz. He was acquitted of related corruption charges under a plea agreement with the state.