Started a new thread following mrsbug's request.
I got an email from Erudio today telling me that an issue I raised with them on 27 March that was then completely ignored even though they asked for confirmation of my details to process the initial email. I gave them the details they requested and seven days later I still hadn't heard anything. So I wrote them a rather threatening complaint telling them if they didn't respond within 7 days I would report them to the relevant financial services. That was on 3 April and today they've told me that my complaint has been forwarded to their Customer Resolutions Team.
I wonder what they do?