Debits accounts two months after account closed

Boksel double debit my account - R481-53. I have cancelled my service with them two months ago already, which Arnu at boksel has confirmed via email. At that time, boksel owed me R481-53. It has taken boksel more than 2 weeks to release my number so that my number could be ported to my new service provider!? I had to draw and send bank statements to boksel to prove that they indeed have no clue, and that they have debited another month's subscription from my account. This was not the first time that they have taken the same amount twice in one month?! Today another R726-11 has been taken from my account and an attempt was made to take another R380-00 from my wife's account as well?!? We have no connection with this horrible company any more yet they keep on taking money from our accounts!! We were cut off for no reason for weeks, promises was made week after week after week with absolutely NO ONE taking any responsibility and NO ONE giving feedback as promised time and time again, why our service was suspended. No credits were given for a two week suspension of service, for NO REASON, we were charged and money was taken from our accounts. Boksel owes us in excess of R1,300-00!! They have promised to refund us so many times, but not a single cent or explanation has appeared. I have spent hours and weeks on end with this disgraceful company on the phone - still I am out of pocket and money is taken from my account without ANY AUTHORISATION from me. I have now had to cancel my cards in an attempt to stop the senseless luting of my bank accounts!! What an odacity they have?? Once you believe their disgraceful lies, your bank accounts will be debited, your number will be suspended and your data will be switched off for no reason at any time. I had clients phoning my colleagues and office landline complaining that I do not answer my mobile phone?!? I go to the bathroom with my phone, not to miss a call!?!? Worst company EVER! Absolutely NO SERVICE, NO FEEDBACK AND THEY HELP THEMSELVES TO YOUR MONEY, REFUSING TO REFUND YOU. Stay away from BOKSEL!!