How to restore my free account and upgrade to paid

Summary:

Today I found that the cloud instance I created cannot be accessed. I tried logging into Oracle Cloud but it told me I didn't have any view permissions. I suspect my account has been banned and used. I want to know how to restore service. I'm willing to pay for this upgrade. Please tell me how to do this?

Content (please ensure you mask any confidential information):

I just want the data file back, it is very important to me, it is everything I do, it is what I depend on for survival, if I lose it, it may cause a heavy blow to my family.