St Courier — Parcel was not delivered but marked as delivered in the tracker

On account of Diwali my company has sent sweet boxes to all their employees via ST Courier. My courier no: [protected] is marked as delivered by their delivery person but the parcel is not yet delivered to me or to my address. No proper response from their side after reaching them multiple times. I didn’t refuse to receive the parcel but they marked my parcel as "Pasrt refused" and marked the status as RTO. I need my parcel as soon as possible. Else i need a compensation of same item inside the parcel.