Strangely I did exactly the same thing as the original poster on Sunday. I wanted to get some fuel so I thought I would try EGSY for a change as I have never been there. I got the same response re faxed forms, so I went and found a neighbour who had a fax at home, got the form, signed it, returned it and rang them. I then got a whole load of questions about arrival times, departure times, no of pax etc, but the final straw was the requirement for wearing hi vis jackets (which I don't have) to just go and pay for the fuel - on a quiet Sunday morning.
So I canned the idea and went to Tatenhill instead where they are very friendly, very helpful and never even mention orange jackets!