1. You have filed the contempt of court application but stated that it is of 'no use'.
2. Where does the said case stand? Expedite its hearing immediately.
3. You can apply before the high court for directing the lower court to hear your matter expeditiously.
4. On the next date of hearing, file an application for direction upon the police to bring your son on the scheduled days to comply with the order.
5. Finally press for child custody for your wife's refusal to comply with the Court order for bring your son every 3rd day of the month to the mediation centre for your visiting your son.