What does it mean when a guy text me 4 times in a row at separate timings when I have yet to reply him?

Anonymous
He knows that I'm working that time, and I told him that he can just text me whenever I'm working but I will not be replying him during my working hours.
What does it mean when a guy text me 4 times in a row at separate timings when I have yet to reply him?
What does it mean when a guy text me 4 times in a row at separate timings when I have yet to reply him?
4 Opinion