When you told your friends and family that you were going to buy a house did they recommend someone for you or did you find someone on line.
How about actually interviewing your Realtor, I bet not many people think of doing that, they just pick the first person who comes along.
Why not interview a few different people for the job, after all it is the biggest purchase you will ever make. Select a couple of different companies. See what each one has to offer you and if you feel that they have the right personality to suit your needs.
A bit of research may save you some aggravation later.