roger, I appreciate you have not been treated well, but the forms are not there to help or stop people getting DLA - they are there to assess if they are eligible for DLA.
I found this
presentation on the web, which although a year of so old, gives an overview (from the DWP's viewpoint) of what they do.
Some stats from it -
7000 staff support and process claims from
2.8 million get DLA
1.5 million get AA
1 million get, or should get Carer's Allowance
Every day, they get
3,200 notifications of changes of circumstances for DLA
3,000 new claims for DLA
1,500 notifications of changes of circumstances for AA
1,000 new claims for Carer's Allowance
2,600 notifications of changes of circumstances for Carer's Allowance
There are (imho) some useful contact numbers at the end of the document.