Discovery Vitality cancellation

I had phoned Discovery Vitality on the 18 December 2019 (ref ***) requesting cancellation of my Discovery Vitality policy. I was told that this would be cancelled and that no further premiums would be deducted. On the 27 December 2019, R359 was deducted. Please advise which month these deduction occurred for as the consultant advised at the time of cancellation that no further deductions will be effected. I had tried the calling the call centre however much time is wasted, hence the use of this platform. Please clarify further about the cancellation of my policy with Discovery Vitality.