Alan Pardew complained that 'you have to commit murder' to be sent off against Crystal Palace following defeat to Bournemouth on Tuesday.
The Eagles have now lost five Premier League matches in succession after Benik Afobe's winner at Selhurst Park saw their winless streak extend to seven games.
But Pardew feels decisions are going against his side and revealed that he spoke to referees' chief Mike Riley following certain calls in the FA Cup tie with Stoke at the weekend.
"I spoke to Mike Riley about [Mark] Clattenburg. The two incidents on Saturday should have seen them sent off," the Palace boss said.
And Pardew was again aggrieved with the level of officiating in Tuesday's league defeat to Eddie Howe's side.
Palace had led through Scott Dann's first-half strike but threw on January signing Emmanuel Adebayor in the second period after the Cherries had come from behind to lead.
Adebayor hit the side-netting late on as Palace sought an equaliser, but Bournemouth left south London with the points.
"No one gets sent off against us," Pardew fumed after the game.
"No one. You have to commit murder to get sent off against us."
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