Vodacom Insurance - Customer Care not very helpful

I cancelled my Insurance Policy on the 2nd of July 2019. I phoned in again today (*** at 10:23) to confirm that it has been cancelled, and to confirm that a credit will be raised for the premium paid for the remainder of the month of July. The lady that I spoke to was not very helpful, and it sounded if she had no idea what I was talking about. She keeps on referring to "that is the system". Again and again I asked her if there is a notice period, and if not, a credit is due. The only answer was "that is the system", and then the call was dropped. What the system is was not explained either. I expect a call centre agent to understand the industry she is in, and to answer questions relating to a policy. Ridiculous! Every single time I phone it is the same story.