Your Merchant Service Provider (MSP) is the company that acts as your financial institution. They deposit funds into your bank account and maintain your merchant account with Visa and MasterCard. They are also the company that charges you the percentage discount rate on your batch settlements. They may also assess transaction processing limits on your merchant account.

The role of Authorize.net in the overall credit card processing procedure does not allow Authorize.net to view your Merchant Service Provider. Please check your merchant statement. You should be able to find your Merchant Service Provider along with their contact information.