Where to start! Just Lets charge ridiculous fees, which they only accepted in cash. They never respond to emails, and if you try and call them, unless you are paying them money, they will almost definitely be on their apparently perpetual lunch break. We have had no end of trouble renting with Just Lets, with damp conditions for 2 years (which for some reason in our tenancy agreement is apparently our fault?!) which they also ignored. Then they sprung building work on us without proper written warning, and according to British Gas our oven has been unsafe the entire time we have been living here. Utterly useless.
What agent could do to change your mind?
Respond to correspondence, give warning before entering the property (which they failed to do on multiple occasions)