St Courier — Product not delivered. Placed order on 25th may

I have placed an courier to Mumbai on 25/05/2023 in west Tambaram branch.
I was informed by the office representative that it wil be delivered on next day but it's three working days still product is not delivered. On 30/05/2023 i went to west Tambaram office to enquire about the courier they said they are not aware of it.
Worst customer service.