Bad attitude and ******* deduction

I noticed on my bank statement that I have a R99.00 deduction that I have no knowledge of. I called a Cape town number once and they were going to listen to recordings and see if I went into a deal for some or other article. (I DONT GIVE MY BANK DETAILS OVER THE PHONE) It's two weeks now. still no response. I phoned today only to have a attitude on the other line...Sipho or somebody and after giving a Durban number that rings off the hook. she throws the phone down in my ear. I want all my money refunded and Digicash are to make sure about the business they do. I want a response as in NOW