Everton have made a formal complaint to the Premier League about recent decisions by officials in their matches.
The Toffees have been left upset by a number of incidents, with the final straw coming against Manchester City on Saturday, when they were denied a late penalty.
Rodri appeared to handle the ball in the area but both referee Paul Tierney and VAR official Chris Kavanagh deemed no offence had been committed and City held on for a 1-0 victory.
Toffees boss Frank Lampard was furious, saying afterwards: "There is no doubt, there is no probably to it.
"The decision is incredible, incredible and that loses us the opportunity to get what we deserved. We've lost a point because of a professional who cannot do his job right."
Manager Pep Guardiola accepts City were fortunate not to concede a late penalty.
He said: "At the pass of Dele Alli it looked offside but if it is not offside it is a penalty."
It's now believed that Everton chief executive Denise Barrett-Baxendale has made a formal complaint to her Premier League counterpart Richard Masters and chief football officer Tony Scholes.
Barrett-Baxendale communicated her serious concerns about officiating in matches including the City loss and has demanded, at the very least, that an apology be given to Lampard and his players.