I need to correct the customers details on their invoice

Hi there, mccourtharry.

The customer's name will show up as doubled in the address field if you entered it in the address field of their profile (Customer Information) as well. This is a common mistake that I've seen from other users also. As for your telephone number, it will only show up if you added it to their profile, too.

Please let us know if you still need help finding out where the duplicate name and telephone number were taken from.