The ATOS HCP lied, what can I do?

The HCP for my PIP assessment wrote in his report details of a series of memory/ cognitive test that I could do. They never took place. The assessment was at my home, my daughter was present and she recorded it. There were other dishonest statements and there is cast iron proof on the recording. I was awarded standard PIP for care and mobilty. I asked for a reconsideration, sent in additional supporting statements from family members and set out what the ATOS HCP had lied about. I got exactly the same decision with exaclty the same reasons back.
I want to complain about the DWP assessor as I have pointed out to them that a fraud has been committed, yet they have taken no action at all and have still relied on this fraudulent evidence. What address do I write to at the DWP? I do not want to phone as I cannot use the phone.
I know that I can make a complaint to the HCPC but I understand that I can also report the HCP to the police for fraud. How do I do this and will they take this seriously?
Is there anything else that I can do?
This is the third time that this has happened and this time I am not going to let the HCP get away with it. I will be putting in an appeal but quite honestly I am too ill to go to Tribunal. It will be the third time at Tribunal.

I also have seen a reference on my medical report to a memory test which I didn't have, (apparently I failed it). It is wrong they d this to back up their reports.