Sigma Couriers — without trying to deliver the letter your courier person say that they failed to attempt the delivery

Very bad service by your courier person and kalyan branch
They do not have a proper contact number updated on any of the website
They always say that the delivery attempt is failed without trying to do it
I am always facing this issue from this courier service when my courier is send by icici bank
Dombivli branch
Very bad service
First try to update your contact details so that customer can contact you for the undeliverable