when people keep on that your quiet

I absolutely hate when people keep on that I'm quiet 
" oh you're really quiet" < is the popular: worst one.
" you hardly talk " 
" don't be shy" 
Makes me feel so small, especially when the same people keep on that I hardly know.
I suffer from social anxiety. I don't need to be reminded and embarrassed.
Anyone else hate this or is it just me?!??
I'm not that quiet when I know the person.. but when people keep on at me makes me not want to come out of my shell.
I hate it!!!