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USMS Customer Service Center

Welcome to the US Merchant Systems Customer Service Center. We have grouped some of the most common customer service forms and contact info together for your convenience. If you cannot find the answer to your question, please refer to the following areas for more helpful information:

Customer Service Contact Info

  • Toll Free - 877-432-8871
  • E-mail -
  • Fax - 510-771-2117
  • Voice Authorization Center (GPS Platform) - 800-944-1111 [have Merchant ID and Bank Number ready]
  • You can also use the button to the right to contact customer service through our website

Customer Service Forms:

  • Address Update Form - Please fill out this form to update your address and phone number for our records
  • Direct Deposit Account Update Form (DDA Form) - Please fill out his form to update your bank account where Visa, MasterCard, and Discover Transactions are deposited. This is also where we will be debiting for your processing fees

If your bank account is still new, or you dont have a pre-printed check, please fill out the following form:

  • Direct Deposit Account Update Form (BANK AUTH DDA Form) - This form is to be used in the event that the merchant doesn't have a pre-printed check. (using a temp or starter check) This form Requires bank involvement.

Useful Phone Numbers: