My mailbox is disabled (554.300. Able it please

Hello,

I've been emailing an account that I know is active and it's a address that receives alot of public emails. I've been emailing for years and not always receiving a reply. However for the first time, this morning I sent an email received the 554.30 reply below. I know the account is busy and active normally until this morning. Can this mean they blocked me? Can this mean their inbox was full and could not receive any incoming mail at that time?

Error Icon
Address not found
Your message wasn't delivered to ***@*** because the address couldn't be found, or is unable to receive mail.

The response from the remote server was:

Hello, i mailed a email ******@yahoo.com and it came back mailbox disabled 554. When will this account be available for signup again? I asume account have been disabled because of inactivity?

Will Yahoo tell when the account is scheduled for deletion if i call Them?

Hello, 554: 30 Sorry, your message to ***@*** cannot be delivered. This mailbox is disabled (554.30).

Hello,
i created my yahoo account a few days ago, used it even yesterday (sent an email not just received) and today my account was disabled. why could this have happened? what can i do to get it back?
Thanks,

Hello,

I can't access my yahoo mail since August till now.message i get always each time i tried to login sorry we don't recognize this email address.donk*************@yahoo.com

Thank you..