Poor services

I have cancelled my policy in March this year still Sanlam sky they are still doing deducting from my salary via my persel I want all my premiums back backdated from March this year when. I try to contact Sanlam they told me that I should send I mail to Sanlam sky that they cannot help me but when Sanlam come to write policy out they they did not struggle to sing me up I'm very disappointed and upset for trying every month since March for this policy to stop deducting my money can you please kindly assist me on this matter ASP thanks my policy number is SP***8 my name is Alana Basson I'd is *** my cell is ***