What is a billing statement and why did I receive one? November 09, 2022 17:54 Updated A billing statement is a monthly report issued to account holders at the end of each billing cycle. Related articles What information does a billing statement contain? What to do if you find a mistake on your billing statement? Does Flex have a customer support number? I’m moving soon. Can I transfer my Flex account to my new place? How does Flex work? Comments 0 comments Please sign in to leave a comment.