St Courier — Not received the parcel from Nagpur

I have ordered food products from Nagoor on 12th April and while tracking the parcel, it shows it was in Thillai Nagar Trichy by 13th April 2022 but till 14th April 12:00 p.m. the parcel was not delivered.
When I contact the ST COURIER, they they are telling today is holiday and so we can't able to deliver. It is highly responsible answer as they have received the courier yesterday itself and hold it without informing me.