<font color="darkblue">Are you sure you can't do anything ...say anything... to your defense??? I know in the USA you can place a rebuff to any poor rating or complaint...the employer MUST keep your response with the report.
If you can't put something in the file, then I would surely take copies of the complaints and write explanations and keep them for your own records...that way if and when you are fired, you have the information to give to the employers who might want to hire you. Honestly is a good policy...imo.
Good wishes on this. In the USA everyone has a right to complain..it doesn't mean they are accurate.