Insurance mess-up

In July 2015 I got an upgrade phone from Vodacom Cresta from a manager, Nathi. I had asked for insurance and signed for it (the paper work is at the shop). When paying I asked if there was ANYTHING else I needed to do after signing and he said \no". Last week my phone got lost and I began the procedure to claim back from the vodacom insurance (queuing at vodacom"