If you have a court-appointed attorney then a couple of things could happen, depending on the judge of the court that you are in.  If you show up for court and express your frustration to the court, then some will remove the court-appointed attorney and assign you a new attorney.  If your attorney is frustrated with what you are asking them to do, they may actually join in the motion with you.  However, the judge is not required to do so--- and many will not.  Their theory is that you already have a free lawyer and you are entitled to counsel.... but you are not entitled to an attorney of your chosing.  If you land in this type of situation, the court will give you two options-- either fire your attorney and the court will remove him/her-- but then you will either be required to represent yourself or hire your own attorney.  Just a note on the request for an extension-- some courts do require that defendants make a personal appearance at every setting, especially criminal defendants, and they will not entertain continuances for trial without the personal appearance by the defendant.  I'm not saying that is the situation with the court where your case is pending, but be aware this is a requirement in some areas.