That is p**s poor service. Why don't you give CS a call? Here they are pretty open to reason, and from what I have read on this forum on ie paying for a car AND fuel during a maintenance job sounds like they aren't that bad in general in the UK either.
Having said that, I think the writing is already on the wall. While a forum allegedly attracts above average drivers having issues with the car, I think it's fairly obvious that the quickly maturing BEV's, and I don't mean just Renault, see substantially less dealer visits and the short term "solution" is not to invest in the equipment and recurring training. IMHO that will be a very costly mistake in the long term.