Phone Number, 225-663-5501. Com or call 800.937.7604.Use black or blue Ink when completing this form. 9100 Bluebonnet Centre Blvd. Questions regarding §457 maximums and refunds should be directed to Louisiana Deferred Compensation at (225) 926-8082 or toll free at (800) 937-7604. Use the free New Jersey Online Filing Service to file your 2024 NJ-1040 return. It's simple and easy to follow the instructions, complete your NJ tax return,.