Mass. Gen. Laws ch. 167B, § 19
(a) Subject to subsections (b) and (c), a financial institution shall be liable to a consumer for all damages proximately caused by:
(1) the financial institution's failure to make an electronic fund transfer, in accordance with the terms and conditions of an account, in the correct amount or in a timely manner when properly instructed to do so by the consumer, except where:
(b) A financial institution shall not be liable under clauses (1) and (2) of subsection (a) if the financial institution shows by a preponderance of the evidence that its action or failure to act resulted from—