Completing un finshed apartment rents system

I need a developer who can fix a script for apartment rents system or build new one, the current developer could't proceed with the project. the project was listed to do the follwing, Looking for developer who can consalidate a script to manage rents of apartments buildings, the script should support arabic and english in addition it support to kind od dates Islamic calendr and gergorian calendr. The script should be able to handle monthly rents and yearly rents culcolate due payments and generat report up to date on request, no tax deductions or reporting in the system, genrate alerts to email on due payments. Thanks.