hmm, how do you really know that the interpreters does not notify the agency that they can not make it, have you ever worked as an interpreter? and how many times have you had an interpreter?..
When my first son was in kindergarden, I found out he was in the school play, I was so excite and wanted to hear him sing but I couldn't so I thought about getting an interpreter so someone could sign the songs that my son was going to sing in the play, I asked the school if they could provide me an interpreter so I could enjoy my son's in his play, at first they said no, and I asked why, she said because I wasn't a deaf student just a parent, so I asked to speak with the principal but she wasn't available at that time so I decide to set up an appointment to meet with her which I did, the next following day, I went to the office, met the principal, and sat inside her office, we talked for an hour, I explained to her about my deafness and what it is like not being able to enjoy my son's singing, not knowing the words in the song etc, she said that there no way they could provide me an interpreter because I was the ONLY deaf parent at my son's school. I understood where she was coming from on this, so I left the office, a couple of weeks later I went to see my son's in his play, I sat there watching him singing, smiling, then he went up to the microphone and said something, I watch the other parents and children laughing,smiling and clapping, I felt so sad inside because I have no clue what my son said, or what words in the song he sang or the name of the music etc. so I decide to do something about this, I fought with the school for 3 years to provide interpreter in music or school play, for those who can enjoy it as well along with the hearing parents too, I'm his mother and I have this right to feel part of my son's school program. finally after 3 years the school board decide to provide interpreters for the deaf parents, for meetings, school plays, music concerts, awards and many more...After my second son enroll in the same school as my first son did, there was more deaf parents at the music concerts, and they told me they were so happy to see an interpreter up on the stage, she said she couldn't believe that the school would provide this service for the deaf parents, It made me feel good inside knowing I did not give up, and I also made those other deaf parents enjoy their children's play as well too...So what I'm saying here, if a parent or a deaf child need an interpreter whether or not they may be the only one, fight don't give up!