I have had the great misfortune to have dealt with this agency more than once. I first bought a property in 1997 and found them to live up to every cliche that exists about estate agents. I then bought another property in 2005 and allowed Central to deal with the sale of my original property - they were rubbish! When I said I was going to another agent (as I was in danger of losing the property I was trying to buy) they miraculously found a buyer the next day! There were endless other probelms (inefficient; inaccurate; don't return calls etc. etc). I would never recommend this company to anybody and I sincerely hope I never have to deal with them again.
They are very good at invoicing though.
What agent could do to change your mind?
Look up the words honesty; decency and professionalism and see if you recognise any of the definitions.