Misinformation costing ME money

After phoning Bonitas call centre 3 weeks ago to enquire about the process to cancel my medical scheme they said I just send an email and the date I want it effective from. And to clarify I still said to the call centre agent "so I can call on the 25th of Jan to cancel for the 31st of Jan" and she confirmed this by also mentioning that I pay in advance and not in arrears. So upon trying to cancel I was told by a different call centre agent that it required 30 days notice. And I explained that I am immigrating and won't even be in the country to use the services. He said its stays the same no matter if you pay in advance or arrears. I asked to speak to a supervisor and got told they're in meetings and I must email ********** I said I would rather have a supervisors email address because queries hasn't even responded to me from my last email yet. He said "just try again". I have always been such a fan of the scheme after moving from a previous medical scheme that gave me problems and now this has frustrated me to a wits-end. I now have to pay another R2000 for another month of services I can not even use because someone in BONITAS CALL CENTRE misinformed me. And no one else is willing to help or take responsibility on behalf of their staff.