Is outsourcing to India having a negative effect on America?

Recently, I've been seeing too many companies outsourcing their customer service to different countries, namely India. Granted, they work for much less, I get so upset because I can't understand them. Whenever I ask to speak to a supervisor, they get all pissy and I'm pretty sure that they transfer me back to themselves. Even Yahoo! outsources to India for their customer service. As such, do you think it's negatively effecting our economy, or is it boosting it?