I HATE my Sprint Instinct phone. SO many problems! What can I do?

I have had my Spring Instinct phone since last Fall, and it's been problematic. First, if I try to delete a message, and after I press delete, it freezes for about 45 seconds. EVERY single time. Very frustrating.

Or like right now, I have a "New Voicemail" that I need to slide up to "Listen"...but it won't slide!!

Or, my phone will say "unlock phone"...and it won't unlock!!

Or, I won't get informed of phone messages for HOURS.

Or, I listen to a message, and try to delete it...and it won't delete. Not the 46 second pause--it won't delete!! I almost have to pound the "delete" before it will work.

I HATE this phone. What can I do??
"Spring" was supposed to be "Sprint"