How do you say this in spanish?

Someone is being rude and you say "excuse me!!"
Is there a translation for this?

I think perdon is to forgive.
Would it be disculpate?

Thanks appreciate the help :)

Mark2015-02-05T17:15:40Z

¿QUE dijo Ud? ("Ud" as opposed to "tu" is important.)

?2015-02-05T21:53:28Z

Thanks!
How about when they do something rude? Not verbal,but with actions.