Unauthorized debit orders.

I was contacted by Telkom mobile in December 2017 regarding a contract for the internet. The total cost was R749. this took place on the 15th of December 2017. On the 22nd of December total cost of R323 was deducted from my account for the following: Debtdoctor, Bundeltc, Safe base, Sos Squadmt and Tectrance. At that time Telkom mobile have not done any deductions. Then I had a deduction this month from them and I see the same deductions have taken place. When searching the internet on these deductions i see it ***** because I never gave permission for them to deduct these. I am going to my bank today.