Customer support for charges and purchases. Sales for partnership inquiries. A single direct line for compliance review.
For questions about a purchase, charge, refund, or receipt.
Support@4Square.us
1-877-210-1090
Monday through Friday, 8:00 AM - 8:00 PM Eastern.
Email responses within one business day.
For merchants evaluating the platform or interested in joining the participating merchant network.
Sales@4Square.us
1-877-210-1090
Monday through Friday, 8:00 AM - 8:00 PM Eastern.
For acquirer review teams, compliance officers, and regulatory inquiries. Full underwriting documentation available on request.
Compliance@4Square.us
1-877-210-1090
Use the form below for general inquiries. For time‑sensitive purchase or transaction questions, please call.
By submitting this form, you agree to our Privacy Policy and Terms of Service.
…the charge is from 4Square Systems. The phone number in the descriptor is the direct line to our support team. Please call before initiating a dispute with your card issuer — we can usually resolve questions about a charge faster than the dispute process.
