Hello Bradas1985!
From your post we see you are running into some trouble with getting FaceTime working on your iPhone. We know how important it is to be able to stay in touch with everyone and want to help!
If the call failed, this shouldn't have any impact on the speakers of your iPhone and you may want to start with the steps here to make sure FaceTime is set up correctly:
Use FaceTime with your iPhone, iPad, or iPod touch
Use the step listed in this article and see if the issue continues: If you can't make a FaceTime call on your iPhone, iPad, or iPod touch.
Take care!