Roam1Mobile is the cheapest company that i have dealt with... Took their student plan for Singapore and it all turned out to be a scam. They have the worst plans that only look affordable on its face value, but actually its like a black hole for money!! Slammed a bill of 25k for a month with no details and this as happened thrice now. Emails and calls have got us this far atleast getting an itemised bills for the last 3 months which obviously have alot of discrepancies. Ultimately we got the contract disconnected and are now waiting for refunds.