The Professional Couriers — package not delivered and no details from delivering station

I have booked the parcel from bangalore to shillong on 19th oct'19 (Consignment# blr[protected]. As per the tracking, it shows has been dispatched to shillong. Per guwahati station, it was dispatched to shillong on 23rd oct'19 so far no information on website. When contact was made to delivering center, no proper information provided. Either they say they have have tracked and will be delivered. The next day they say they have not received the product or need to search. Its going to be 9 days against 3 days delivery. The complaint forum in website doesn't work properly even after providing all details keeps asking to fill all details. Contacts number available. Either no one answers the call or its keep ringing either corporate office or bangalore station. Please have this investigated.