Section 23. No bank or credit union shall transfer any funds held in any account of the customer in said bank or credit union as a consequence of a default of a debt owed to such institution unless the customer has been provided a written notice, prior to the time the loan is made, which states the institution may transfer such funds to reduce or extinguish such a debt. The provisions of this section shall not apply to open-end-credit plans which are subject to section twenty-one.