Hello. My name is ***** ***** I will assist you in resolving your problem today. The first thing to do is to calm down. Unfortunately, you will have to do a factory reset, which will wipe your data clean. It is not possible for you to backup your data first, because your phone is locked.
However, you may be able to recover your Google contacts and/or calendar, if you have sync'ed them with your gmail account. This should alleviate much of the problem.