Unauthorised Billings - payment

Good day,<br> <br> Please assist me in getting refund from The Big Five - Sage network. This company has been debiting R79.00 from my account since September 2014 to March 2015. They stopped debiting but I never received my money back for the 7 debits to a total of R559.93. Their phone number: *** is always on voicemail.<br> <br> Regards,<br> Dineo Felane