St Courier — Shipment not Delivered. No one is answering at Bangalore & Chennai Head Office

Address:

Bangalore

My Courier under tracking # [protected] was booked with urgent documents for Door Delivery service. Shipment was received at Bangalore office since 14-Dec-2023 having some urgent documents. Contacted Bangalore office (Mobile #[protected]. The gentleman regretted that they cannot deliver and if required can collect the courier from their office. After this call, they are not picking the calls. Even tried calling Chennai customer care[protected] several times, but no one is answering the call.
Not sure from where and how to collect the courier.
Please help. Its very urgent.