About Blocking Email due to Exceeding Limits (over 5GB)

About Blocking Email due to Exceeding Limits (over 5GB)

Hi admin, our host (admin:  duyvu@homeoffice.com.vn ) has been blocked this morning because of exceeding limit. From then on, my boss can not send any kind of email or receive emails. We didnt get any support except the email annouced that our host is blocked. There is no any help, no any instructions or suggestions to solve this problem. So please tell us how to continue use our host. We try to delete many mails as many as possible but nothing happens. So how can we unblock our host and back to work. Is the only way is continue delete emails or not?

Or someone can help us, please!!!