Insurance vouchers for partner stores

I have experienced a recent theft of my personal belongings and have been dealing with the call center for over 2 weeks. Finally my claim gets approved and I am offered vouchers to only go shop at partner stores to replace my ****** goods.

I believe it is standard practice these days to pay out in the form of vouchers, but the insurer refuses to pay me out in the cash value approved for the claim. Due to the nature of the theft, I have had to go and replace some items already at my own expense and therefor have requested to be paid in cash.