IPHONE 4 KEEPS SENDING TEXTS OLD AND NEW OVER AND OVER?

This just started happening a couple days ago at the most. Whenever I text somebody they always say that I keep sending the same messages 3-4 times, even when I only send them once. I've looked it up and everything and nothing is working. I deleted all my messages, reset network settings and everything! I'm now testing it on y mothers phone and she's getting my old texts that I sent hours ago, now, even my new ones keep sending duplicates. This Is really annoying me. It's up to date and everything, 6.1.3. I do have good service when I send then, it almost never says the sending… Part. My carrier is sprint if that helps?

"If I got a suck of a big plump nipple everytime I heard a question like this, I'd be a milk farmer"
Edward Snowden

Great

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