False information given

Good Day I took out a contract with Telkom earlier this year at their branch at The Glen Mall, upon my contract application the sales consultant advised if I would like insurance for my device which I agreed to, few months down the line my phone got ****** and I called telkom to blacklist it and then claim from my insurance however I was advised that I did not have insurance for my device. I do not appreciate that I was under the impression that I had insurance when I didnt, now I am paying for a device that I do not have in my possession. I would either like to get a new device or cancel my handset installment and I will only pay for subscription.