IPhone insurance claim disputed

I took a contract in June/July 2022 for 2 phones at Mtn Port Elizabeth iPhone 11 and sumsung. Both phones we requested to use our old numbers. They also recommended their insurance (company they work with). I took the insurance. Fast forward to 2024 May, my daughter was ****** everything on her way (walking) to a college which is less than a kilometer where we stay.

We put in a claim at mtn and they referred us to the insurance. Signed the documents, provided everything they asked for. The claim was declined on the basis that the number which was used on the phone is not what it was insured for. I was surprised and shocked as the the number we asked to be used on the IPhone was the number we used since 2020. We learned through this claim that the number that was put in MTN system when we were taking the phone was mistyped with the last digit. The number they have in their system and the number we used on the iPhone is different only with the last digit. I went to mtn and the consultant who assisted me in 2022 told me is not supposed to talk to me I must talk to the insurance. I explained to her and she said she does know how to answer me I must speak to the insurance.

The problem in the insurance claim is the last digit recorded wrongly as identified by the insurance,which is a fault by an MTN consultant, to me MTN should take responsibility not me losing from the insurance that I paid without fail because of typing error from mtn consultant