Burgess Hill were "cheated" out of two points after a narrow defeat at King's Lynn, according to manager Gary Croydon.
Hillians were leading the eastern division leaders thanks to a 46th-minute strike by Steve Harper.
But a controversial penalty by Dale Watkins on 77 minutes, given for a handball by Leo Day, and a Dave Staff free kick eight minutes from time gave the home side the points.
Croydon said: "We all feel absolutely cheated. To go all the way up there and perform like we did against the league leaders and then lose in that way is very hard to take "There were 1,000 home supporters baying for blood and the referee bottled it. It was never a penalty in a million years and it cost us the game."
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