They keep calling and never leave a message. Also receiving calls on other numbers that are similar such as 0432 697 228 (when i answered this one they hung up), 0432 142 910 and a few land line numbers that are interstate from where I am. They all started calling around the same time (and i never entered my mobile number into a website recently)

I called back number 0432 507 728 reached IVR for a company called My Reward Australia.

My rewards Australia -very persistent, despite being told 3x not to call this number again. Lots of different numbers to hide behind