A.S.
I don't know about Texas but here a temporary guardianship or conservatorship lasts for one year so you would not need to go back to court until September 2011. Call the office and make an appointment. The attorney cannot ignore you if you are in his/her office. If lack of communication continues send a letter firing the attorney and file a complaint with the bar association. Good luck.
I also want to point out that it is common for attorneys to hold off contact because they are waiting for a document from the court or because they have a 2 week trial or because they can't just drop everything and call everyone who calls them the same day (because everyone wants a return call immediately and sometimes there are 30 voicemail messages when one gets into the office). It is hard to tell from your question whether you have called a few times in the past week or everyday for two months and if, when you do call, you leave a detailed message or ask a receptionist to have the attorney call you (if the latter there is no way of knowing if the messages are getting trough or if the urgency is being expressed). Also, if there is no news sometimes attorneys just don't feel the need to contact you (especially if they have already told you what you want to know several times....as in, your case is progressing we have to wait for the judge, etc.). You could try calling and leaving a message indicating that if you don't hear from them within ten days you are going to contact the bar. That might get their attention.
Bottom line: Failure to contact you within a reasonable amount of time is unprofessional and rude but what is considered reasonable is subjective. If you feel your interests are not being represented start contacting other representation.