While traveling to the US, I've used data for 3 days and downloaded 6MB on the first day, 6MB on the second and 11MB on the third. Contrary to the price shown on Koodo website of 5$ per 20MB for US roaming without add-on, I got charged 23$, 32$ and 8$ respectively per day. The first KB on each day was 5$ and fees were added extra on top for each KB. What am I missing here? Thanks.