Quick to put a debit order through but not so quic

Good day<br> <br> I subscribed to Openweb on the 25/05/2015 without noticing that I need an ADSL line. The next day when I have read the details properly I cancel my subscription because I do not have an ADSL line and they acknowledge my cancellation. To my surprize they debited my bank account with R199 & R399 on the 1st of June. What they are charging me for I don't know because I have not use there service at all because I was not able to. Since then I am trying to get a refund but without any success. I was also informed that I should give 1 months notice meaning that they are going to deduct another R199 & R399 at the end of June. I think it is ridiculous and would appreciate any assistance. Please spread the word that they are not good to do business with.