Iwyze processes made to abuse consumers

I am having such a horrible time at Iwyze. They have raised my premium twice in less than 3 months. So I tried calling them because I need to cancel policy. They drop the call every time you say you want to cancel. I have also sent an email which has not also been responded to. I asked around for their offices and I was told they are in Cape Town and I am in Durban and was advised by their underwriter Old Mutual that they don't attend to Iwyze's queries.

I have attended to my bank to have the debit orders reversed and stopped but they told me they cant because Iwyze has debit mandate over my account.

Before that they refused to pay a claim because they said I was ehailing with the vehicle. They said they will void policy but only voided it 5/24 months worth of premiums. Im left with no option now but to change my bank account because I feel victimised by their behavior.