Furious Rangers insists the the decision to deny them a penalty in Premier Sports Cup final defeat to Celtic is "damaging for the credibility of Scottish football" in a firm response to Willie Collum.
The Head of Refereeing Operations at the SFA came out swinging over the flashpoint that saw Liam Scales bring Vaclav Cerny to the ground on the edge of the box.
Referee John Beaton awarding a free-kick and while replays showed the winger was in the box at the time of the incident VAR duo Alan Muir and Frank Connor opted against intervening to award a spot-kick.
Collum branded the decision "unacceptable" decision not to award Rangers as the SFA released the full audio exchange from Clydesdale House.
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