Ireland's Michael Conlan was one fighter who complained of being “cheated” after his bantamweight quarter-final loss to Russian's Vladimir Nikiti.
The International Boxing Association says the majority of calls were received positively.
Meanwhile, former Irish featherweight world champion Barry McGuigan says boxing authorities should set up a fund to help fighters who're struggling with mental health issues.
It's after Britain's heavyweight title holder Tyson Fury said he'd taken cocaine and was suffering from depression.
McGuigan told the BBC that the sport's been “blind” to problems like it.
