Oakhurst debited my account after cancelling

On 16 March 2015 I signed up with Oakhurst for comprehensive cover on a vehicle <br> <br> The policy was to be effective on 1 April 2015. On 18 March 2015 I cancelled the policy. On 2 April I was shocked to see that they debited R203 off my account even though I cancelled with them.<br> <br> I contacted them on 2 April in the morning and asked to kindly refund the money. Then they say it was for addidtional options that I opted for and they need to check the telephonic transcripts. I reiterated that this has nothing to do with any options on my policy and that it was cancelled before it was in force.<br> <br> Oakhurst please refund my money !