Will these people ever go away?!

Not content with pestering me on the phone, now I get another postcard through my door from no less than the manager of the local branch of Foxtons - an estate agency we decided not to invite to sell our house.  Why is the manager being so pro-active?  He writes

I have tried to contact you on several occasions regarding a potential applicant desperate for a property such as yours.  Please contact me urgently.

Anyone looking for a house such as mine can easily find this one on the internet, in the estate agent's window, in the London-wide property magazine "Move To" ...

If Foxtons has a client then they are, surely, acting as property search agents and should receive payment from the client for whom they are acting.  Property search agents do not charge the seller and earn their commission from the house-hunter.  This is a tantalising prospect.  I must seek clarification of the situation! 

My gut feeling is that there is an impending bloodbath in the estate agency world. There is a scramble to rake in some fees.  The market is dead.  No movement means no money coming in. 

A case of every estate agent for themselves.