Vodacom staff incompetence

I bought a phone in 2017 and got insurance for it through the Vodacom at Nonesi Mall, Queenstown. When my screen broke a year and half later and I took it for fixing at a Vodacom in Rustenburg I was told that the phone registered on my insurance was my previous model. This was never updated when I upgraded my phone at the store. Meaning I have been paying insurance for nothing. I have been struggling to contact the store as other stores say they can't assist. What must happen now because I have been paying Insurance. It's not my fault that the staff did not update my new phone details