Policy Cancellation and legal modification not covered

Spoke to Mathabo yesterday (21st October 2020) to perform details updates of policy ***) for my Mother that were not captured correctly on the Policy Schedule. Mathabo indicated that because we replaced the broken-down engine (2.0) that came with the car in 2013 with a brand new engine (2.4-litre). This counted as a deliberate modification that is not covered by ABSA i-Direct even though we explained that a new 2.0-litre engine was not available at the approved Hyundai Engine Dealership for this iX35 model and our policy will have to be cancelled and she will forward the cancellation to the Cancellation Department. We do not understand ABSA i-Direct as the new Engine has been registered with the Traffic Department and is legally recognisable as VIN number & Engine number are registered. This is not an ******* modification to the car!!! We have not received email of cancellation of the policy. So kindly cancel this policy that was to be effective 01st of November 2020 as we have insured with a different insurer that covers the car.