The Springboks lost lock Lood de Jager to a red card in their 32-17 win over France in Paris, and this weekend had Franco Mostert sent off after just 11 minutes in the 32-14 victory over Italy in Turin.
Both were permanent red cards, with De Jager to challenge his four-game suspension this week, and Mostert waiting for his first hearing.
“As a team we’re disappointed with how things are going at the moment,” Stick told reporters in Dublin on Monday. “Every week we’re losing players, and it’s tough.
“The build-up towards the Italy game was very good, the boys were excited, the spirit in the camp was good, and Italy had shown the previous week that they’re a quality side. Everyone was looking forward to a proper Test match.
“For the game to turn out the way it did… it’s frustrating. If you look at Franco’s situation, honestly, with some of the incidents we all saw over the weekend, there could easily have been five red cards.
“Yet in other cases similar actions get a yellow. We’re disappointed with how things are being handled at the moment.”
Stick says the Springboks believe there is not much more both De Jager and Mostert could have done to lower their tackle height.
“Franco has done everything by the book. Maybe his only mistake is that he’s tall and trying to adjust his height, he hit here (the chest) and it ended up in the head. I don’t understand how that becomes a permanent red card.
“Rugby is a physical game; sometimes things aren’t perfect. But to say that was never a (legal) tackle… that’s disappointing.”
Stick says he feels for the referee against Italy, New Zealander James Doleman, who was only acting on the advice of others, most notably the Television Match Official, Tual Trainini from France.
“I also feel for the referee (Doleman). We could hear the communication between him and the team supporting him, and in the first 45 minutes there were probably about 21 decisions to make, and around 20 of them went against us.
“Not because of the ref, but because he has to respect the comms from his team outside.”
Stick also pointed to recent red cards for wing Makazole Mapimpi and hooker Jan-Hendrik Wessels, who received an eight game suspension for allegedly grabbing the genitals of an opponent when his own disciplinary hearing admitted there was no video evidence of him doing so.
“I don’t want to say too much and end up banned like (coach) Rassie (Erasmus) in the past, but if you look at the last four red cards and suspensions for our players… it’s not right,” Stick said.
“As a team we’re doing everything we can to play the game in the right spirit. We never speak badly about other teams. We try to keep it between the four lines. But are we treated fairly? At the moment, I don’t think so.”
South Africa are next in action on Saturday when they face Ireland in Dublin.