title: Sudden spike in billing/ account activity
body: <p>I was subscribed to the AWS free tier, and my bill was $52 after the exhaustion of the free tier quota in AWS sagemaker service by 1st week of March 2018. After this billing- I'm working on S3 and Lambda only(free tier use)</p>
  
  <p>My bill was $52 by 29th night, On the 30th morning, we were shocked to say the least, that the bill has raised to around $250 after being idle for the night. We immediately decided to close
  the account to avoid any further spike in the bill. By the time we
  did all this the billing has crossed $800.</p>
  
  <p>Below is the detail from Bill
  <a href="https://i.stack.imgur.com/fY7I0.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/fY7I0.png" alt="enter image description here"></a></p>
  
  <p>There are 98,281,759 requests there is US East region, but my program hardly used 1000-10000 request, there is no way it uses this much requests that too in few hours of time.</p>
  
  <p>What further action should we take? Any help will be greatly appreciated.</p>
  
  <p>Note: If this is not a right place then tell me which place is appropriate i'll move this post to that forum</p>