You have the right to seek out other counsel if you are not happy with your representation. Your attorney's request for mediation may have been a tactic to delay the proceedings so that he could obtain the records you requested, in which case he was doing what you wanted. Talk to the attorney and see if they can explain what is going on to you
It is not unusual that the court, or your counsel, would order/pursue mediation in lieu of a hearing. A mediator can assist. However, mediation is a voluntary process in that he/she cannot force you to enter into any agreements. If you have lost trust in your counsel, you can always switch attorneys. However, it sounds like this may be an issue of miscommunication, and you should visit with your attorney in his/her office to fully address the situation. It usually increases expense to switch attorneys (since your new lawyer would have to bring him/herself up to speed), and you should keep that in mind.