Does anyone know of a good voice teacher??

Hi to anyone that reads this!
I'm fifteen years old and have an alright voice but i want to develop it-mainly for musical theatre, but i love singing anything!
If anyone knows off good but not too expensive voice teachers in Frankston, Mt. Eliza, Mornington or surrounding areas could they please post a message or e-mail me on gel_sparkles@hotmail.com

Thanks!