Quote Originally Posted by Ran
Vocal pronunciation I'll agree with you, but it should have no bearing on his reading and writing skills. You don't need your ears for those.
Who's to say he knew English (written) from birth? English is a very difficult language to master, and many take their lifetimes without disabilities. Either way, I believe you are in the wrong and should apologize, but I honestly don't give 2 out of 4 f*cks what you do.