Seems to be related to a company called Make It Cheaper (Energy comparison).

Called asking for a person who hadn't worked at our premises for nearly 3 years and would only identify as from M.I.C. Once finally figured out who they were (were insisting on talking to the finance person), I mentioned that we have no control over our energy (in an office building).

Got a 'You should have said so before!' and then hung up. Good customer service on that front...

I called back number (02) 8077 0076 spoke to a guy but did not say from what company.