Can’t walk? - You are penalised if you try to save up for a replacement wheelchair!

Can’t walk? - You are penalised if you try to save up for a replacement wheelchair!
People assessed and put on higher PIP due to acknowledging they are more severe disabled- often quadriplegic or blind must be permitted to save for a replacement wheelchair of the type they are using and for other crucial expensive equipment which allows them some sort of normality in daily living to allow them to carry out the daily movements which others take for granted. They are at present being penalised by having their ESA benefits reduced or stopped if their savings for a replacement wheelchair reach even a third of the total cost!
The equipment in my sons case, replaces his legs and prevents pressure sores. It allows him to stand to go to the toilet like other men take for granted, to get about or reach up for a book on a high shelf. To lay down when he feels unwell relieving my back from an additional hoisting. These special chairs aren’t provided by NHS nor do any contributions meet him even a quarter of the way!
When folk like my son struggle to reach over £6,000 for their chair, their money is suddenly deducted or stopped!
DWP will take money off ESA payments – up to £40 each week, and at £16,000 or over, you can't get income-related ESA at all.
The cost of my sons wheelchair (a Levo Combi) with the side supports, head supports, back support, contoured pressure cushion, special controller and chest and foot straps costs £21,000 new!
It’s inhumane to ignore the fact that the most severely disabled people have extensive and disproportionate costs compared to others.