Who benefits when you try to force an unwanted apology on someone who doesn't want to be contacted by you? Consider whether you're just trying to assuage your own guilty conscience at the further expense of the victim.
An apology doesn't itself assuage a guilty conscience, it is just an acknowledgement of the debt created by the wrong. A fake apology may be worse than saying nothing, but the prevalence of fake apologies is no excuse not to do the right thing.