Hi KARTHIK .P MANOJ < @KARTHIK .P MANOJ >
This is a community forum and not an Azure team support ticket system. As such, In the forum we can help in technical issues but we cannot check your account and provide support to your specific account.
It seems like you need to do what you did which is create a support ticket, but I assume that this will not help you as well since the issue is not technical issue but probably related to the fact that you used all your free credit
But after ~1 hour, my VM had been stopped and my subscription had been disabled
My guess is that you created a VM using one of the default template which cost more than 200$ for one hour and therefore you used all the free credit.
Again... I cannot know what is the exact issue since as I mentioned we cannot check your account. Therefore, we can only play the guessing game