To access the Customer Center in QuickBooks, open the application and select Customers from the top menu, then choose Customer Center. This will display a comprehensive list of your customers, including contact details, transaction history, and outstanding invoices. If you're using QuickBooks Online, go to Sales and then Customers. If you face any difficulties or need further assistance, you can contact QuickBooks support at +1-855-200-0590 or (855)-200-0565 or 800-446-8848.

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