The Professional Couriers — Product not delivered even after a week

My package with airway bill no. DEL[protected] was placed with professional couriers from delhi to pratapgarh (UP) on 2nd of feb. it has now been more than 1 week that the parcel has not been received at the address provided.
tried contacting multiple persons down the hirarchy but could not get any solution.
the parcel contains my mother's medicines and are of prime importance.
please help me out.!