I'm really sorry to hear that John.
After you posted, I did a quick search to see whether your other TM post about this issue would come up on search engines... it was not near the top of the results, and the reason seems to be that there are a myriad of tales of woe with respect to the MG ZS EV.
Personally, I'd take this up with the Motor Ombudsman - I had a family member, who had an Alfa Stelvio, who had similar repeat issues and the Alfa dealer had their car for ages, with little to no progress - after the Ombudsman got involved, things got resolved satisfactorily.
I'd also be tempted to write a post, that details the facts of your case, using full descriptions, company names, etc - all the things that search engines like. Motoring press often don't want to bite the hand that feeds but factual accounts get picked up on search engines, giving your voice a much wider spread. Just my 2-pence but it may help.