I'm getting the impression that the situation is bad, but all is not yet lost and no-one has given up hope. I think that the biggest single issue is how the Telegraph makes use of the space on its puzzles page to 'best' (ie attracting most readers) effect.
The contact for complaints about the intended cancellation of the EV is the Telegraph Puzzles Editor, Chris Lancaster, email chris.lancaster@telegraph.co.uk. It seems to me that perceived popularity of the EV is a key factor in the decision, which as a former EV Editor Chris will not have taken lightly, so 'I tackle the EV every week' is good, but 'I tackle the EV every week but never submit' is (if true!!) even better. The fact (again, if true) that you subscribe or buy the paper only for the EV is also important.