Multiple insurance companies have been caught changing claim amounts adjusters have turned in.
60 Minutes did a show interviewing adjusters that turned in claim amounts and the companies have been changing the figures and leaving the adjusters names on them.
If you have a claim I would suggest asking the adjuster to send you a copy to compare with what the insurance company gives you.
https://youtu.be/KTc9udJG3QM?si=UVRLlLuvOSdfupQ3