UNAUTHORISED REWARD BENEFIT

Recently I received a call from Durban from a lady who wanted to tell me about Rewards benefits from Bestmed. I told her I knew about this but I am not interested, and hung up as she was going on and on to try to convince me otherwise. I dont need any benefits rewards from Bestmed as I am already paying a lot of money for minimum benefits/returns- by the middle of the year I will have to pay for my chronic medication from my own pocket. Yesterday I received an SMS informing me that a debit order for the rewards benefits will be going through (I have no idea how much, when and who authorised the debit order). I tried calling the number ********** which is 'supposedly' to be for Queries, which did not even ring. Is Bestmed so desperate to rip its clients' off to a point where it will delegate somebody else to authorise debit orders on top of the premiums that clients pay? DISGUSTING! no wonder a lot of their clients refer to them as WORSTMED! I WILL BE REVERSING THE TRANSACTION SHOULD IT GO THROUGH, WHENEVER!!