Hopefully Motability will reject the car, if not and the dealer phones for you collect the car, you can tell Motability, you no longer feel safe driving it and lost confidence in the car, as the problems have been there since new.
In the mean time, it may be wise to start test driving replacement cars and query lead times and whats available in a short space of time.
I have always liked the look of a Clio / Captur, Nissan Juke, Peugeot 2008, Toyota Yaris Cross, VW Taigo, T Cross, Polo, but like Skoda they are pretty bare leaving paid for options, compared to say Reno etc, if you like that sort of stuff. Outsiders MG ZS has decent kit as standard, Dacia Sandero or Jogger lol.