If you get no reply from the Midlands MD, try Aizad Hussain, and, failing him, Simon Duffy.
Hussain doesn't seem too great at replying to people, but should still be the next port of call after your regional MD.
Simon Duffy seems OK. e.g. he took the time to
reply to Mick's emails about the email problems. So if you have no luck with any of his underlings, maybe he'll be better.