Cancellation

I called Discovery on the 25th of March and requested to cancel the insurance I had recently taken out with them. I got through to a lady who said she was transferring my call to the cancellation department. While I was on hold, the line went quiet until I hung up. I then sent an email to *** with my ID number as the subject and requested to cancel. I later received an email with this detail:

"Thank you for your recent contact with Discovery. It is a pleasure to advise you that we have now resolved your query with the reference number *******"

I woke up this morning to my account being debited, I need my money refunded.