Unable to cancel medical aid after numerous requests

We've made repeated requests to cancel our membership over the past 3 months. This is either ignored or they ask unnecessary follow up questions to delay the process with no instructions of where the response should be directed to.

I phoned the call center multiple times as well. Each time empty promises were made that someone will phone me back. They don't provide any way I can follow up

Extremely frustrating. After this ordeal I'm going to cancel all my discovery products (life insurance and banking). Considering legal action or reporting them to the ombudsman