First Flight Couriers — Wrong delivery of the confidential document

Address:

Hyderabad, Andhra Pradesh

My password for the new applied debit card is sent by the Mumbai Axis branch to the address Savoy PG, Opposite thubrahalli bus stop, Bangalore, through first filght couries which was my previous residence, as this is a password of the debit card this is highly confidential mail.
The tracking number of this consignment is ZB7598355 in the records of first flight courier.
I searched for this number and came to know that someone named ALI has recieved this and there is a column where first flight courier tracks the conatact numbe rof teh person who receives it, but it is blank.
Now my complaint is how can the courier person deliver such a crucial doscument to teh person who did not know me and that too without collecting his contact number.