Essex Police have urge West Ham fans to stop calling 999 if the team loses.
The Hammers lost 2-0 away to Watford in David Moyes' first game in charge and sit 18th in the table one point from safety.
Fans chanted in protest against the board and the team's form during the game at Vicarage Road and the Essex Police Force Control Room have pleaded with supporters to stop ringing the emergency number.
The @EPControlRoom account tweeted: "Ringing 999 because @WestHamUtd have lost again and you aren't sure what to do is not acceptable! It is a complete waste of our time. #999foremergencies only."
West Ham host Leicester in Moyes' first home game at the Olympic Stadium in front of the Sky cameras this Friday, live on Sky Sports Premier League from 7pm.