Unauthorized debit orders

I have been battling for more than 17 months to stop unauthorized debit orders going off my account.

During April 2016 I was contacted by Elite Mobile offering me a tablet, which transaction never materialised. One month later charges started going off my bank account, as follows: SafetyEM R55.00 Hotspotter R49.00 Rescue Box R57.00 SO Music R49.00 Monthly Total R210.00

I have tried every possible avenue to stop these transactions from reoccurring, but have been unsuccessful.

To date and amount of R3,570.00 has **********ly been deducted off my bank account, incurring monthly bank charges, which to date total R340.00.

I am at my wits end as to how to stop this ***** from continuing.