St Courier — Courier not delivered no proper response

I got a courier from Dindigul through St courier I called the St courier person one day before and informed them to contact on alternative mobile number as I'll not be available on the mentioned number on courier.

The next day I got call from St courier on mentioned number in courier. I am unable to pick the call as my company won't allow me to get mobile inside. There is no proper response while I called the delivery person . Very irresponsible answer saying nobody informed me about mobile number & asked to come and collect in office as we won't deliver it next day.

We are unable to go and collect the courier as both o[censored]s are working in company. We will be free only on Sunday but Sunday is holiday.

We don't know y this delivery people's are very irresponsible and simply say go and collect???