Still being charged on a canceled plan that I didn’t activate!

Vodacom has been charging me for the past few months for a damage plan that I did not apply for. When i noticed it in November I immediately called in and canceled it. The next month I saw it was still active and the amount was still being deducted from my account. I called in and requested the phone records to show that I previously canceled it. The costumer care was rude and obnoxious! And still nothing! Vodacom South Africa you have very poor work ethics!