I have claimed a refund on my replacement policy as a result of incorrect information and cancellation date put in by sanlam

I have claimed a refund on my replacement policy as a result of incorrect information and cancellation date put in by sanlam. The current policy i am on commenced on 1st of January 2025 and was not a new policy therefore the old policy should have been cancelled on the 31st of December 2024 and not 31 January 2025 as app**** by Sanlam. This is ***** and forgery by Sanlam as you cancelled the old policy later than the required date as in January 2025 would mean that I was over covered with two policies and that was not my request. the old policy deducted for January 2025 and February 2025 for which I was only refunded once. Now they refusing to pay the refund for January 2025. Do not take replacement policy with Sanlam.