Extra Month charged after termination of account

In April 2015 I had contacted Medihelp to inform them that I would be cancelling my medical aid as I am leaving the country.<br> I asked them to debit April and May's instalment in one as my account will be closed on 12/05/2015.<br> They have now debited 3 months off of my account! It would be lovely if I could get through to anyone top query the issue but I have been hold for 45 minutes at a time during the course of the day.<br> <br> Medihelp you are by far the most frustrating company I have ever dealt with. <br>