Criteria for discharge

Wife calls husband and abuses his whole family, wifes brother sends abusive audio and abusive text messages to his whatsapp abusing him alone. Father of the victim files 2 ncrs for each of the said crimes .Since threatening calls continued pcr was filed (son was outside country while pcr was filed and reason for son not filing ncrs as he was sick and could not go to the station has been mentioned in pcr). Chargesheet was filed in absence of victim and stay was bought .Stay has been vacated and they have now moved for discharge stating that the actual victim did not give complaint or is not a witness .Please suggest legal remedies so that case will not be discharged and the guilty are punished.