I understand your frustration regarding your device issues that you are experiencing. What you can do in order to help the issue is to try and do a hard reset on your device. Here are the steps for a hard reset:

From the home screen, select the applications tab (located in the lower-left).

Select Settings.

Select SD & phone storage.

Select Factory data reset

Select the reset option.

Reset phone

Resets the phone

Reset phone & Internal storage

Resets the phone and the internal storage

Select Erase Everything.