India Post — product stuck at kolkata ap nsh

A medical item booked from Thygaryanagar H.O (600017) on 25th of April 2020 to be delivered at Sarsoona S.O through speed post.
IVR:[protected]
It reached Kolkata AP NSH on 29th of April 2020 and then bagged and dispatched on 30th of April 2020.Its been roughly a week and there is no further update on article.
Inquired customer support personnel on toll free number [protected].
According to them article is currently at airport and Sarsoona S.O which is not functioning at present and they gave a number of nodal delivery officer Surujit Deshpandey([protected]) which is switched off.
There is medicine in the parcel so it's important.