N.Y. Gen. Bus. Law § 712

§ 712. Mailing of statements of credit account balances. Each creditor\nshall provide every holder of a consumer credit account with a statement\nsetting forth any credit balance greater than one dollar at the end of\nthe billing cycle in which such balance is first posted, unless such\nbalances have already been refunded, and thereafter at least once in\nevery three billing cycles.\n