Tom Heaton was adamant West Ham's winning goal should not have been given as the Clarets' were controversially beaten at London Stadium.
Mark Noble's goal in first-half stoppage time, tapped in after Heaton had saved the West Ham captain's penalty, was enough to extend Burnley's wait for an away win.
But referee Bobby Madley missed an apparent foul on Heaton before Ben Mee's clip on Winston Reid led to the decisive spot-kick as the Clarets' keeper was blocked off by two West Ham players, including the arm of Cheikhou Kouyate.
"I thought it was a foul on me," said Heaton. "Big Andy Carroll got a head on it. I went up to punch it away and I think it was Michail Antonio jumped into me and moved my arm and the other lad has also jumped in.
"I thought it was a foul at the time and I haven't changed my opinion yet.
"I try not to moan at referees at too much. It's a tough job. Rarely do I give them any grief but the fact that is I thought it was a foul."
To rub salt in Claret wounds, Heaton saved Noble's penalty but couldn't keep out the rebound.
And despite dominating the second half and creating a handful of chances, Sean Dyche's men couldn't find an elusive away goal.
"That was another frustration. I have gone the right way (for the penalty) and commited to it," Heaton added.
"It's a tough one where the ball comes slightly inside your hands.
"You fully commit to the corner and when it's not quite in there, your hands are always coming back and unfortunately the ball is always going to go back in that direction.
"Sometimes you get away with it and sometimes you don't.
"Unfortunately today it wasn't to be but I thought we gave it a good go in the second half.
"We had quite a few decent chances to get back into the game and it was much more like us in the second half. I think we deserved something."