The Cheetahs have lodged a complaint against referee Stuart Berry for his officiating in their defeat to the Sharks in Durban on Saturday.
The men from Bloemfontein said via a statement on their Facebook page that they have reported Berry to the South African Rugby Union (SARU) and Sanzaar.
"Since Saturday’s match we have been inundated with reaction from fans over the handling of the match by referee, Stuart Berry," read the statement.
"We share the frustration. The necessary procedures have been followed and the coaches and management have made their grievances felt at Sanzaar and SARU.
"It is now in their hands to take the matter further. There are measures taken against referees if there is sufficient cause and reason for action."
Subsequently, Berry's name was not amongst the list of match officials released by Sanzaar for this weekend's final round of league matches in Super Rugby.
Although the Cheetahs' statement did not mention any specific incidents the most controversial decision of the match occurred in the 24th minute of the match when Berry failed to award a penalty try to the visitors after the Sharks continuously collapsed a scrum close to their try-line.
The Cheetahs were leading 7-3 at the time and despite protests from their captain Francois Venter, Berry didn't feel that it was necessary to award a penalty try.
The Sharks went on to claim a 26-10 victory.
The visitors are also perturbed that Sharks captain Tendai Mtawarira was allowed to return too soon from a spell in the sin-bin and they also disagreed with Berry's application of the advantage law.