Admittedly the majority of errors are local hardware or end user mistakes. Be sure to eliminate these by keeping your operating system and web browser up to date. Before reporting an error also reboot your device (tablet, smart phone or computer) to verify the problem persists.
As with any website, rather than calling customer support its usually more productive to:
— send a written report, typically found under help/feedback
— describe your equipment – mobile iOS/droid, computer including OS version, web browser including version.
— explain what you were doing when the problem occurred.
— provide ID of ancestor in question or database in question
Being specific and providing technical info pushes your report to the tech team as opposed to the entry-level support team.