Dating

Guy-friend keeps doubletexting me and asking to hang out. Even though I've said multiple times not wanting to. what to do?

A guy in my friendgroup has feelings for me (also confirmed by him) and does try to contact me a lot on social media. On instagram by sending 30+ reels per day and by doubletexting me a lot on whatsapp. Most times to ask me randomly how my day was or how I am. Sometimes even multiple times per day. But also when to hangout or see eachother again. He also keeps flirting at random moments or makes comments about me. He has done this a lot last year so I once met with him to make him stop asking this. But after some weeks its started again. I now try to respond very slowly to give a very clear hint. Sometimes by waiting two full days before I respond. but I notice that he then double-texts with two or three random emojis (in separate messages below it) to "make" me respond faster. How can I make it tactically clear that I find it annoying and, above all, uncomfortable? He is still in the same group of friends, but I am on the verge of blocking him because I can't keep ignoring this. I already quit social media for mental-health reasons and can't keep having his behaviour on top of that.


Updates
+1 y
Forgot to add: I already told him recently I don't have time to hang out beause of work and my studies, but he keeps on asking anyway.
Updates
+1 y
Another update: He decided today to message me on other platforms as well. He proved not to take any hints so I decided to stop boldly telling him to stop messaging/spamming me and i'm not going to hang out with him. I noticed to get annoyed by even seeing his profilepicture when he messaged me every time, whatsapp keeps showing his "new message" thing even though I archived and turned off notifications. Hope that works, otherwise i will just cut off contact pernmamently and block him.
Updates
+1 y
New update: I blocked him on every platform after he tried again by flirting, sending emoijs and asking to hang out while I kept saying no. He does already know I'm not into him and I'm hetrosexual, but it seems like he keeps trying to convince me. I think cutting contact is the best thing to do like you said in the comments.
Guy-friend keeps doubletexting me and asking to hang out. Even though I've said multiple times not wanting to. what to do?
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