COMPLETE INCOMPETENCE

The WORST EVER!!!!!!!!!!! I tried opening an account with supersonic, after a month of trying to get connected, and numerous phone calls nothing was done yet! Disgusting to say the least! I proceeded to cancel the application for this got a cancellation ref and app**** with a new subscriber - 2 weeks later Vumatel came to check the installation. Only to find out after I cancelled supersonic still proceeded to send vumatel to connect and it wasn't the new subscriber. I struggled for another month to get vumatel to cancel Supersonic. now 2 months later supersonic loaded a debit order on my account for R3559.25 for the installation. the same day a sms was send the debit order went off with no waring. I am furious, dont know what to do. after holding on the phone for half an hour this morning and wasting my money on phone calls, I dont know what to do!!! they need to stop this debit order - can somebody please tell me what to do because I am frustrated and dont know what my next step should be. PLEASE HELP