account blocked

550 5.4.6 Mail rate exceeded limit. Use the link mail.zoho.com/UnblockMe to unblock

My email address, alice@cncworkshop.co.za is not working. It says my account is blocked because I have exceeded my limit however I have only used 5% of my allowance. When I look at my blocked accounts on my control panel it says none of them are blocked

I have tried logging 2 faults already, please could someone urgently unblock my account

Thank you