Formal Complaint to capita after receiving PA4 report

I was so shocked and upset that my son report was all fabricated with untrue statements. on all activities of the report. I called capita and put in a complaint. I was advised someone would contact me from customer relation regarding the report as no one called I called again first thing explained exactly how I feel I was told someone will definitely call back. I didn’t take any more chances and decided to put it all in writing point out everything that is not factual and all fabricated had put what I had said as I’m appointee for my son prepared all notes for his assessment with the help of this site thank you so much to Steve and all from Benefit forum worked so hard help with all information that required for successful claim I been member for long now it has really helped me can’t thank you guys enough. Just glad my son not had a decision yet I sent written complaint and called pip helpline as advised by capita to let case handlers know hope they take action against the assessor as she went lengths to fabricate entire report even though a lot medical evidence has been given from professional she disregarded them never looked at these things made up and shocking! Life is hard as it is my son genuinely complex need and he got diagnosis and evidence yet she made report based none factual statement which upset me so much I my self have life threatening illness just recovering from treatment. I didn’t need this capital are very much aware hope the don’t use that report for decision as Dwp pip helpline took my call made notes they want me to send them letter I sent to capita i am going to send them letter first thing. 😔🙏