you should know better than to directly name the nationality based on your what u thought....made better sense if u had just left that sentence out but by doing so u have then invited others to join in and further join in the criticism of Indians as was evident in the posts after your posting....neither did u then refrain from asking others to avoid doing so.....since it was you who initiated the topic....i bet u still don't grasp my point that maybe it wasn't an Indian who called you....to you maybe we are all alike...no one needs your apology just you and others like you be a bit more discreet and more informed in your opinions.
relax this sort of things happens to us all the time..this is our way to protest and inform the mistaken party....we take it in our stride not sure others do.