The only info i can find is on this page https://www.nhs.uk/conditions/social-care-and-support-guide/care-services-equipment-and-care-homes/walking-aids-wheelchairs-and-mobility-scooters/
Get help with costs
You might be able to get a grant or help from a charity. https://www.bettermobility.co.uk/charity_funding_options.php
Better Mobility has a list of charities that can help pay towards a scooter.
The Motability Scheme can help if you want to hire or buy a mobility scooter. It allows some people to use their benefits to pay for one.
Other than that I dont know sorry
Just saw this and glad you got it sorted. I need to jot down all this info lol..I had a problem with an ISP years and years ago and having threaten them with going thru the small courts it went no further and they refunded me with extra. TBH I would have suggested that you go to your local MP to see if they can help or they can refer you where to go.