Bonitas, ******* Call Centre

I have been trying to cancel my membership with Bonitas medical aid for 3 weeks in a row now, they refuse to process this request as they obviously cannot do without my money. I have been calling the call centre week after week trying to get the cancelation certificate out of them, but every time when I call I am told that the fund is active and that it has not been cancelled even though I have an email from them of 3 weeks ago acknowledging receipt of cancelation request. I cannot believe that clients in 2015 have to struggle like this, I thought Bonitas was a reputable company, I was mistaken, I called again today and after not coming right and asked for a supervisor have been put into a loop call that never gets answered, I have been on hold now for 15 minutes after NOT being helped in the first place, Bonitas call centre and service is of a very low standard. I am not impressed. Luckily I never needed them in an medical emergency, imagine that