Can't get faulty NHS powerchair fixed

Wibbles

For the second time this year - my Salsa Mini 2 Electric wheelchair needs a service

I have only had the chair for 6 months and use it mainly in the house (my mobility is now virtually zero) and also I use it for the local shop.

I had a new battery fitted 3 months ago - it wouldn't charge

Now - There is a fault shown on the display - the seat riser is shown flashing every 5 seconds - but the seat is fully down.

This is not shown in the instructions - since the seat lift is optional.

I emailed the NHS section who supplied it, on Monday, and not received a response. I have also copied the department head who is apparently on holiday for 2 weeks.

What do I do ?

Do I hope that the chair doesn't break down - leaving me totally up the creek or do I keep on trying to get a response from someone ?

I may "reject" the chair and get a NHS personal budget for my own purchase - how long does that take - how much and is it easy ?