Inquiry about billing for ELK serverless

I assumed that using serverless for my project would incur charges based on the time I used it, so I left it without sending any INSERT or SELECT requests. However, I was charged $700 unexpectedly.

I completely don't understand why this cost occurred. If it was for data retention or usage, I could comprehend, but I haven't done anything on the dashboard after receiving the API key.

I never imagined incurring $700 for INSERT or SELECT operations.

Is it meaningful to charge fees based on borrowed time in serverless computing? As a student, not having $700 is very difficult for me.

I asked ChatGPT to help me write this in English because I'm not fluent. Could someone please assist or provide contact information related to ELK in Korea?