This sounds like too much drama to me. Blocking? Did he really need to block you over an erroneous text? He could have had more compassion for you after you explained yourself and apologized. I mean, sure, to be fair, your text wasn't a welcoming text towards him and told him to leave you alone. That does send a message that you don't really want the relationship. Still, you explained, and he should have been able to let it go and not hold it against you, especially given what you're going through with your eye surgery and depression.

Is this guy worth it to you? I agree with others that he sounds immature.