Yes the devil really runs Foxtons, but they hide under a thinly veiled facade of British racing green and triple barreled named staff. When I lived in London I had many fantasies of ramming my car into one of the Foxton minis....
I used a company well known in South London to rent my property.The name was one to describe little dangly things on Oak trees. I was on mat leave, living in Wiltshire so really needed a reliable service to trust with my property.
I was asking a very competitive rent for the area as I needed tenants quickly. I heard nothing for three months. I called and they gave me a load of spiel about market conditions not being good.
I called back as an interested tenant and they told me that the owner hadn't left a key so they could not arrange any viewings!!! 
When I revealed who I was, and that I bloody well had left a key they told me they had mislaid it. It then turned up in someones draw. So another month went by with no tenants.
I had renovated the kitchen at some expense when I lived there and it was in great condition. When I made an impromptu visit I found two of the kitchen cupboard doors lying on the floor. As part of the refit the kitchen planner had covered a large water pipe in the corner with a fake wall cupboard which was screwed shut. So out of curiosity (rather than asking me why it wouldn't open) someone had just yanked it off. I can't imagine the visits were unaccompanied so it must have been the agent.
They absolutely denied doing it, and blamed me!!! They refused to pay for the repair of it. I was furious.
They found a tenant shortly afterwards, and I made an agreement after a year (they paid their entire rent for the year in one lump sum as they were from SA with no credit history) I offered to reduce their rent if they dealt with me directly. They stayed a further 5 years with no issue.