Try posting on your local board and ask the question of posters there, they will likely know of providers that fit your needs. Get a VIP membership before you do (takes about 10 days if you do the money order route, immediately if you use a credit card). Ask that people who respond to your local board post PM you any information that they have (will need the VIP account to get a PM). There are many phonies in this business, so you need to be careful and ask questions of people on your local board before taking the plunge. The local boards are found on the "regional boards" pulldown that is a ways below the selection tab that got you onto this board.
You also want to try the escort search engine and become familiar with information that you can gain from it.
Good luck. If you do good research beforehand, you will find what you are looking for and will not experience hassles.