Unauthorized debit order.

On the 30th July I called Outsurance to get a quote on insurance I basically signed up however I told the guy that I am not sure if I will get the car on the 03rd August so with regards to the commence date I was not sure ,he told me that if I do not get the car on that day I should just let them know I then told him that he should rather wait on my call to confirm as to when I will be fetching/getting the car and that they can debit my account for the \\initiation fee\.On the 03rd of August 2015 I emailed outsurance to cancel/place policy on hold and i called and spoke to some lady at outsurance to cancel the policy/place the policy on hold as the car that i wanted was sold she said that she has cancelled.To my surprise today the 06th August my account was debited.Is this normal business practice? Why was my account debited after the policy was canceled and also in the initial conversations that i had.i called today to rectify the problem but i am being sent from pillar to post.finally spoke to a senior but instead of fixing the problem at hand she rather wants to sell me insurance again?Can someone please help me understand what went wrong?I need this problem sorted out today!\"\"\""