The Professional Couriers — Huge Delivery Delay

Parcel (with medicines for my father) couriered from Mumbai (Borivali West) on 31-Dec-21 was not delivered till 07-Jan-22. Docket no.[protected].
Courier tracking showed it was kept on hold at Bhattarahalli office from 05th Jan-22. No specific response was provided regarding the hold status. On calling the office, they said it would be delivered by 06th Jan evening. But that did not happen.
So on 07-Jan-22, I personally went to the office and collected the package.
Absolutely Unprofessional behavior was displayed as there was no reason provided for delay. Very disappointed, as my father's medicines didn't reach on time.