Hello Poznan,
The members said it all, already.
If you focus on the people who disrespect you, your life will be horrible, indeed. However, if you turn and meet/socialize with those who like you, you'll feel much better.
Ignore them. All those who want to harm you, just ignore them. If you cannot stand them, set them a trap! How? Record, take snapshots of their acts and send an email to the administration. They will get what they asked for, I assure you. There is no space for disrespecting in this community and if you want to help us achieve so, activate yourself.
Rethink about your quitting. World can be a wonderful place.
Regards.