If any loan which was made or insured under section 1484 or 1485 of this title pursuant to a contract entered into prior to December 15, 1989, is prepaid or refinanced on or after October 8, 1980, and tenants of the housing and related facilities financed with such loan are displaced due to a change in the use of the housing, or to an increase in rental or other charges, as a result of such prepay