The Arkana was on my shortlist and I do recall the R.S. Line being on the scheme at some point last quarter. If Motability have accepted the order it must have been.
The only difference I can see after a quick look is the wheels and upholstery.
It does sound like the sales rep has given you duff information about the change of trim levels and I’d use that to try and negotiate the £200 reduction in AP. Take it up with every channel possible, the sales rep, his manager, the CEO of the dealership, Renault UK customer service and Motability. Keep it civil and friendly but play on the fact that you are disabled and vulnerable (even if you’re not).
If all else fails you always have the option of cancelling and re-ordering but who knows how long you’ll have to wait.
If I seem a little strange, that's because I am.
Skoda Karoq SEL.