1+ 877-200-7013 is the QuickBooks Enterprise support number you’ll need when you wish to contact QuickBooks customer service. But before you make a call, it’s important to understand what your QuickBooks Enterprise Customer Number is. A QuickBooks Enterprise customer number is a unique ID assigned to businesses using QuickBooks Enterprise software. When you register your business with QuickBooks, they assign this number to your account, which helps their support team locate your specific information quickly.