If you want to disable merchant services in QuickBooks, you will have to go through the steps provided below:
Steps to disable merchant services in QuickBooks

• You need to click on Command and F simultaneously
• Search ‘Keychain’ in the search box
• Now, you need to click on ‘Keychain access.’
• Type ‘QuickBooks’ in the search window and then select ‘Connection tickets.’
• You would have to click on the ‘Edit’ button.
• Then, click on ‘Delete’ to disable the connection tickets
• Log out of the device and then restart the same

The steps mentioned above are only for Mac users, so if you want to know about some other device, you can connect with the experts at Quickbooks customer service number to take additional assistance from the experts who are available 24 hours a day to serve you with the best possible solution in no time.