RTT randomly turning itself on
My iPhone SE2020 has been randomly turning RTT function on in the middle of a phone call. I have never enabled this feature. Its impossible to get out of or turn off when its interrupting my calls. It makes it impossible to hear the person I'm speaking to. I tried following instructions on how to disable RTT but it doesn't even appear as a feature on my settings. What the ****, Apple?
iPhone SE, iOS 13