"Trying to get an appointment at Mater Hospital for physiotherapy"

My GP sent a referral about my hip to the Physio Department at Mater Hospital and she also asked for physio treatment and a specialist appointment for me last year. Because I had no answer from that, my GP, to my knowledge, sent the referral three more times and I brought the letter to the department in person too. No answer, not even that they just received the referral or anything like that. The GP sent a new referral again to the Specialist Clinics (Orthopaedic Department and the Physiotherapy too ) more than 5 weeks ago but no answer again. I sent a compliant letter to the Hospital and they sent back an apology, that is all, but no appointment time.

From what I know of the Public system it is overloaded, but this is ridiculous. How many times do I have to ask for just a simple appointment? And during this time (half year), I have a strong pain day by day. I don't understand, if the hospital is not able to give me an appointment why don't they send a letter about it and I won't wait for longer, but instead ask for an appointment from another hospital?