Terrifying experience

I took an insurance with Sanlam sky in May 2023 agreed to pay R304, in October they took R1077 without any notice I wrote to them to refund my money and cancel the policy, they never refund me my money in November they took R604 in December they took R604 again , what they are doing is not fare and we did not agree on it, they deduct from my salary and I am told to cancel with them, this is not good at all