Motability car

Here some interesting news I lost my enhance rate for motability so I have to lose my car I contacted Motability to find out when it was due to be returned as the last payment they would have had was 08/01 /2017 and was told as DWP have not contacted them yet by letter I am able to carry on using the car and just wait for there letter then I have three weeks to return the car .When I asked who was paying for the car I was told that the claim any outstanding money from DWP so based on that it is costing the tax payer £55.10 per week and as they say over 400 cars are being returned every week where on earth is any saving just to get us off PIP