cricket ovation 3 text messages don't work

Help please, recently my messags on my cricket ovation 3 don't work, I keep getting a notification saying messaging has stopped and I can't send messages and when I do get messages the messages keep repeating and keep getting sent. I also cant archive or delete anything, or block anyone. It's been pissing me off and I've tried everything I've restarted my phone more than 100 times and ive powerd on and off, I've had it off overnight and I've changed settings and deleted apps but it's not working. Please help