Why am I being charged $2.99 ~once a week?

Ive gone through my bank statements and on average once a week i am charged 2.99 by "APPLE ITUNES STORE SYDNEY AUS" or see "AUTHORISATION ONLY - EFTPOS PURCHASE AT ITUNES MUSIC STORE AUSTRALIA AU"

Ive checked my iPad app store purchases, iTunes purchases and OSX App store purchases and cant see anything that I would be charged for, im in the process of calculating this and am already in the Hundreds ( Backdating charges to match up with last Apple purchases)
I also make a point of not subscribing to anything, also if it was a subscription i should get a receipt every time right?

I did search online and found a few similar issues but none the same.

Does anyone know how to fix this issue or know who i need to contact?

James