Why did open ai just charged me 10$? i only used it a lil bit and no

i got charged today 10$, i did not use much chat gpt, just some questions about coding, only 5-6q a day for a week or so.

i dont see much activity spikes:

  • all flat
  • no api keys
  • no active subscr.

yet it charged me! why? how to refund?