@Firstaide I don't recommend doing this at all. That would just circumvent the block, and make this about you instead of them.
Sometime we hurt people without meaning to, that happens to anyone, autistic or otherwise. It happens.
And sometimes hurt people react to this in ways that are not really forgiving. But that is their right.
So understand the block as "I don't want to talk to you", not as "you are a total asshole". And live with it.