Cancellation of gap cover and money still taken every month

I had a Sanlam Gap cover, which were managed by Kaelo. When I cancelled my gap cover, I got a notification from Kaelo that the cancellation will be done at a certain date. After the cancellation payments were still deducted from my account. These last three months the deductions were stillI going off from my account. I have been calling around this morning and no one from Sanlam can help me, Kaelo points fingers at Centriq and Centriq doesn't answer phones. I have now emails Kaelo and forwarded the same email to Centriq. Why is it so difficult to get in touch with people at Sanlam and Centriq??