Resolution Health fail to serve

Last week I phoned in to get information with regard to cancelling my medical aid. At the time the computers were down and the service person could not give me the required information. However she did tell me to email after the 7th of the month to have my medical aid cancelled for the end of April. Today when I phoned back I was told that I was supposed to email before the 7 and I would now be charged for an extra month. When I requested a supervisor I was told that he was busy and would phone back. This was at nine thirty. By three o'clock he had not phoned back so I phoned again, only to talk to another consultant who told me I didnt listen properly last week and that she said before the seventh. Again the supervisor is busy and unable to attend to my complaint.