"Sydney Hospital Hand Unit not contactable"

After receiving a text message for an upcoming appointment, I realised I had to reschedule. However the phone number provided would automatically hang up and never actually work. In turn, I had to walk to the Hand Unit (luckily my work is 15 minutes away) to reschedule. After calling many times on other occasions, I realised this phone number is simply not a working one. After questioning the reception at the Hand Unit, they said this number is outsourced (even though it is a 02 number). I’m not sure whether they lied or simply lacked knowledge. Additionally, updating my appointment was also made harder as the receptionist claimed my therapist was not in that day, yet I saw the therapist on the same day. I’m not sure why the receptionist had to lie about that.