HELP24 by Telephone
Report critical, priority 1 issues to HELP24 by telephone, call: +1 (866) 494-4255.
Select Option 1 for Tran$act, Infinity, V4, D1, and Speedpay
Select Option 2 for all other ACI solutions
Local numbers for Global HELP24 are available in the following countries. If a country-specific number is unavailable, please use the number shown above.
Speedpay Product Support
Speedpay support can be reached via the eSupport Portal (login above),
or via telephone, only for Priority 1 Application or Batch File issues:
+1 (866) 494-4255 (option 1)
PAY.ON Support
PAY.ON support can be reached via the eSupport Portal (login above). Or via telephone, only for Priority 1 issues:
Visit Online Documentation to access code in various programming languages, for modern platforms.
Responsive Support
Swiftly resolve technical product questions or support cases with ACI’s 24x7x365 Global HELP24 support service.
- Maintain compliance with mandate management
- Gain complete confidence in break/fix coverage
- Access insights with dedicated eSupport portal
“ACI knows our business and processes extremely well. Anytime we have a situation they are knowledgeable supportive and responsive.” – Vice President, Sr Tech Manager at a major international bank


Select Support Services to Meet Your Needs
ACI offers a range of customizable support packages to ensure you get the help and guidance you need to run, grow and transform your business.