vodacom insurence

back in march already i called the vodacom insurence and cancelled my insurence. they billed be in march i went in stre to enquiere i was told that was the last month it would debit, in april again i was billed, i went in store they made call the same number and they said i would receive an sms with the confirmation. that never happened i stoped paying the account and again i may same thing happened, again in June and even now in july on the 1 week i went to the store and was expected to go through the same process, the consultant on the other end of the line who wouldnt share their physical address put the phone down on me after she told me nothing can be done since the account is in arears....... i did stop paying becouse i was being billed for something i have cancelled back in march already, this is not the 1st insident with vodacom insurence in particular.