@arun @user5227 and @aknishika thank you for writing. I am sorry to hear you’re experiencing such issue with your CF account.
Furthermore, I’d like to draw you attention and you’ll need to follow these directions from below post which contains more information related to the Billing errors you are experiencing as well as how to proceed further, to create a Billing ticket as follows:
Please, be aware it’s Holidays vibes and there might be limited window from Support, nevertheless the team will surely help. Thank you for patience in advance.