Unfair Vodacom Comprehensive insurance

Hi. My wife lost her cell phone on the 18/06/2022. We done the necessary steps by getting a case number. On the 25th June 2022 we went to Vodacom Cape Gate. They contacted there insurance department. Vodacom insurance indicated that the comprehensive insurance does not cover the cell phone fully. It only cover half the value of the phone. The day we took out the cell phone we were told by the agent that the comprehensive insurance would cover the full value of the cell phone. I was told that the cell phone was fully covered for the total amount that is worth(R7500) when I took out the insurance. The Vodacom paper trail state that the Vodacom agent at Cape Gate did made a mistake.