'Bang' is a name used by printers and computer programmers to refer to the exclamation mark. 'Interro–' comes (obviously) from the word 'interrogation'.
The interrobang has never really caught on. Wikipedia reports however that some typefaces (including Calibri – the default font in Microsoft Office 2007, 2010, and 2013) have included it, as have some Remington typewriters, and that (while its popularity may have peaked), "it has not disappeared."
© Haydn Thompson 2021