Willian and Ramires were both sent off in the 1-0 defeat and their manager was also dismissed.
"I tried to speak to Mr Foy twice. I tried to speak on the pitch, and I tried in the dressing rooms," the Chelsea manager said.
"In the dressing rooms I tried to ask politely, can you give me five seconds? And he refused."
The spokesman said Mourinho asked to speak to Foy as he went into the officials' changing room in the tunnel at Villa Park.
When Foy refused, Mourinho then asked to speak to fourth official Jon Moss as he entered the room, but again he refused. Chelsea say Mourinho did not enter the referee's room at any point.
Mourinho insisted he did not act in an angry manner during his request to speak to the officials in the tunnel.
Fearing another FA charge, Mourinho refused to speak about Foy's decision to send off Ramires and Willian.
"I don't make any comments about any of the incidents in the game. I prefer not to speak," he said.
"It's a big occasion for me to know about the character of Mr Foy, because I want to know what he's going to write about my sending off," Mourinho said.
"I was two-three metres inside the pitch or four-five metres, but there was like 10 persons there. It was me, my two assistants, (Villa boss) Paul Lambert, Paul's assistants.
"And there was Agbonlahor, who come in and made an aggression on Ramires from behind.
"I think almost all of us were just trying to calm (things) down and try to stop (it). So if I was sent off because I was on the pitch, I ask why not the others, especially one player that made an aggression on another one, Agbonlahor on Ramires?
"Agbonlahor came from the dug out, he went to Ramires pulled him from his neck and Agbonlahor was not on pitch he was on the bench."
A charge from the Football Association may now follow. When asked whether he thought he would be punished, an unrepentant Mourinho said: "Me? Me or the ref? No, I don't expect (to be charged) because I did nothing."
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