I swear the text keyboard on my phone is slowly trying to drive me insane. Every time I start typing it starts changing letters and words around into nonsensical messages.

I j. t want To typical a simple. Mess age

Drives me insane I tell you. Especially when it does this after I hit send

Did the Russians hack it?

In case you're wondering, Android on a Droid Turbo

Are you sure it can't be turned off in the menu?

Edit to add...
Auto spell correct and auto complete both can be turned off on my iPhone. (keyboard options)

I bet it can on android as well.

Whoever designed the software for AutoCorrect and AutoComplete should be drawn and quartered and then the parts should be burned.

AutoSpell is my worst enema.

It can be turned off in the settings.

I also have an android, and found the factory keyboard not to my liking. Luckily, you can replace them. I use SwiftKey (available in the Play Store, I think it's $.99)

Sounds like you may have swipe enabled? Where you can trace the letters, rather than tapping each?
Mine does that if I'm typing too quickly & haven't fully released one letter before touching the next.