This is the 657th most frequent Indonesian word.
bilang
"To say" or "to tell."
In this sentence, 'bilang' means 'to say', describing a manner of speaking.
Cara dia bilang sesuatu selalu sangat sopan.
The way he/she says something is always very polite.
In this context, 'bilang' is instructing someone to repeat speech or words.
Coba bilang ulang nomor teleponnya supaya aku bisa mencatat.
Try saying the phone number again so I can write it down.
Here, 'bilang' is used in the context of reporting speech, equivalent to 'said'.