Referee Geoff Eltringham showed two of those to Michael Doughty, who was sent off in the 71st minute with the visitors 2-1 up and looking on course for victory.
Westley said: "I've just been in to see the officials and one of the linesmen has said 'we are aware of what's going on'. I demand to know what he means by that. I need that question to be answered.
"I was staggered by some of the decisions out there and I've said to my players that the game has been decided by forces way beyond our control.
"There is a prejudice in officialdom against our club and I'm sick to death of it.
"I asked my players what Vale's penalty was awarded for and none of them had a clue. I asked the referee afterwards and he said it was a shirt pull, but he didn't even know who had done the pulling.
"When we played Peterborough recently they committed 17 fouls and we committed 16 fouls, yet we ended up with seven bookings and they had only two.
"I spoke to the head of referees about it and he looked at the DVD and said there should have been four yellows to each side. Something has to be done."
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- American Football