why does my credit status sudd

why does my credit status suddenly decrease by 50 dollars. How often and is this credit status refreshed?

I can’t calculate my actual usage

Which payment method is you’ve had?

Then, note this about using Overwatch item

Amazon EC2, Twitch and Mudfish

CDN and Mudfish

overwatch mostly but what i am experiencing is that when i reconnect my credits just suddenly drops

I need to investigate this issue little bit more. Did you have more than 50 dollars at your mudfish account before paying $9.99 AUD at 2018-10-13? When I checked your account, it seems something is not matched.

no i did not have 50 dollars, i always just pay 10 dollars at any time and never goes up over 10