If 500MB of free browsing a month in exchange for watching a few ads seemed too good to be true, it was — Samba, the free, data-only MVNO is no more. According to the companys blog, it came down to the increasing price of wholesale data, which made the ad model unsustainable. Fortunately, if you bought a SIM card recently or paid for a data top-up (another option if you didnt want ads), youll get a refund.