St Courier — Delivered Only 1 Box Instead of 6 Boxes

I have couriered 6 boxes through ST Courier having Docket Number [protected] to the below given address. But at the receiver end only 1 box is delivered.
I have contacted the ST Courier delivered person KARTHIK - [protected] and confirmed that he had only 1 box to deliver. He has given me the Chennai guindy hub, TN[protected] number.
I contacted the Chennai guindy hub, TN[protected] and they also had no idea about the remaining 5 boxes and they asked me the recipient address and told me they have registered a complaint in their system.
Kindly give me the correct feedback and deliver the remaining 5 boxes immediately.

Refer the attached POD image where the Number of boxes is 6 Nos and Weight is 15.420 Kg