Sorry, for 1 star rating since i couldn't find 'Zero' .The company that doesn't know the meaning of integrity, ethics. DON'T ever enable AUTO-TopUp/Recharge of your credit if you are a small company. You will be made bankrupt by these cheats. They will allow premium SMS by 3rd party and will blame you that you don't keep the token/codes safe. with mins you will loose 1000's of dollars. And they will not accept any of your legitimate explanations and just wast of their hands. The frequency of this happenings suggest that Twilio security is not robust ot some deliberate act unknown persons (Unknown can be anyone , can be hackers or some one have access to the tokens or internal know how)....Not safe to use Twilio if you don't have enough muscle power.Don't know why small and medium players are targeted? They are good at finding easy targets.We had been ripped of by 1000's of dollars and the company is blaming our security, but our security standards are government grade and only very limited have access to the codes and that too with 2FA. 100% there is a leak from Twilio side which they ae passing to others since the other part does not have the muscle/financial power to fight with these morons in court. We use other service providers apart from Twilio and have the token/code in the same private repository/servers and they were not breached as Twilio, which suggests the leak is from Twilio side or Twilio messaging environment does not have adequate safeguards for the customers. There are so many ways to earn decent money, extortion is not the right way to earn money.