DTDC Courier & Cargo — delayed delivery

Address:

560018

I have booked 2 couriers of consignment no.33842639 and 33842690 on 9th and 10th january'20 respectively which have been delivered on 19th and 17th january'20 at the destination. Kindly let me know the reason of taking 10 days and 7 days time to reach at destination whereas normally it takes maximum 3 days time in each and every month.
For this delay my employees will not get the salary so who will take the responsibility.