Cell C device insurance

Cell C is the worst and their device insurance. Took out the Cell C device insurance on the 23rd of February 2024 and canceled the cover on the 28th of February 2024, which is within their cooling off period, as per their policy wording. They still deducted the premium. I requested a refund and submitted the required documents and they are refusing to refund me the amount they deducted. Their consultants hang up whilst you are speaking to them on the phone. Bunch of ********* ****mers.