Reached daily message limit & mail box full

I keep being informed I have reached my e mail daily limit after sending about 4 e mails?

 I am then requested to verify my account but when I try and do this, each time it says there is an error try again later.

When I try to send an e mail from my i phone it says the mail box is full.

I have cleared a lot of mail from my in and sent boxes and also deleted the mail in deleted box.