Like Kezo says, contact Motability. I’ve always found them to be really helpful.
I’ve just contacted Motability myself via the bot feature on the Motability website concerning my own lease it’s not as fast as telephone but it worked okay, usually I would have used the phone but a combination of a sore throat and head cold the phone wasn’t a option. Motability are allowing me to cancel my lease they are even waving the £250.