How do i contact heritage telephone banking customer service? To speak to a Customer Service Representative during regular business hours, call 678-284-3433. Heritage Telephone Banking: Enter the last four digits of your social security number. This is your Personal identification Number (PIN) to enter Heritage24.What is american heritage credit unions routingtransit number? American Heritage Credit Union Routing/Transit Number: 236082944 If you wish to contact us about any other matter, simply complete and submit the form below and we will promptly respond!What are the benefits of american heritageu membership? Membership Benefits Shared Branching How to Switch to American Heritage Overdraft Protection Additional Services Invest Investment & Retirement Center Insurance Real Estate Services Certificates & IRAs Education AmericanHeritageU Planning for Life Stages Financial Calculators Financial Wellness Buying or Selling a Home Blog Privacy & Security