We do train go-arounds including balked landings down till you are touched allready, even though we do say "land" it is of course allways possible to just press those TOGA switches and do a go-around (and calling out "go around" as well of course). I have done that a couple times in real life allready. It is absolutely no biggie.
Actually we can answer to the 500ft RA auto-callout with "land" if we judge that landing is assured and omit any subsequent callouts with that (approaching minimum, minimum). However if any of both pilots calls out "go around" we will just do that and discuss later.
Go-Arounds at or below minimum are something we have to do several times each time we are in the simulator (4 to 6 times a year) so we are kinda used to it.