Sadly no, you can't insist. Some people buy the SDcodefree meter off Amazon, because it works fine and the strips (the main cost) are far cheaper than any other manufacturer. If you bought a different monitor, it would probably be cheaper in just a week or two to leave it in the cupboard and buy the codefree.
You then need to make the most of your strips by testing at the key time - for me, that's 2 hours after eating so you can see what works for you and what doesn't food wise. If you go over, say, 7.8 at 2 hours, you had too many carbs, so cut down the next time you have the same meal. After a while, you'll have worked out what you can eat and you won't need to test so much - just when you try something new, or now and again to make sure things aren't changing.
Good luck