@selin2716,
You're blocked.
This means you are already rejected.
Let. It. Go.
It is over; he is your ex. That means you're not together anymore. I'm sorry that what was highly likely to be a random mistaken wrong number got you so riled up, but it did not mean anything to him.
You have to make it not mean anything to you, either - and if you need counseling to sort out your feelings about this, then by all means, go!