Click 'My Customers' along the top, left hand side of the screen.
Use the search box to locate the customer you want to delete by name, phone number, email or address
Click the box to the left of the customer, or customers, you would like to delete. Then click the '...' icon just above the Company column.
A drop down menu will appear. Click 'Delete customer.'
A new window will appear. Confirm the command by clicking 'delete.'