Navigate to the Customers page and select the customer whose account you wish to manage.
Click the Billing tab.
If the account does not have a credit limit already set; In the Billing details section, click the three-dot menu and select Credit limit.
Click the three-dot menu in the Billing details section again and select Suspension automation.
Select the ON radio button to enable automation for this customer.
Check the box next to Suspend when balance exceeds credit limit.
Click SAVE. The customer's account will now be automatically suspended if their balance exceeds the limit you set. A Credit limit exceeded tag will appear on their profile.