Just let it go. I was found to misuse ``will" and ``would" many months ago and was heavily attacked last Saturday after I went home. I have just kept quiet.
No matter how bad my English is, I do know the difference of the two words. Plus, how many Chinese from mainland of China dare to claim that their English is good? I just use English to express my views and ideas. That it.
So let it go. Arguing with this type of people is useless.