Owen Coyle was feeling hard done by after watching his Bolton side's unbeaten home run come to a halt against Crystal Palace.
Glenn Murray netted the winner from the penalty spot after referee Geoff Eltringham judged Zat Knight had brought down Wilfried Zaha.
But Coyle felt the Trotters had been denied two clear-cut penalty decisions, including a handball by Darcy Blake, in the first half and was furious with Eltringham.
He said: "It was the biggest penalty you will ever see in the first half, Darcy Blake was like Julian Speroni in goal.
"It was a soft penalty we conceded and it's happened to us now three times and has ultimately cost us the game and it's not good enough.
"We did enough to win that match and at least to take a point. I spoke to the referee after the game and he said he couldn't see what was a stonewall penalty.
"Goals change games and this result's really hard to take. We just want an even break and we are clearly not getting that at the moment.
"The bottom line is that we've got to pick ourselves up and get the points in our next game against Leeds, which will be another real tough game."