Hello @Chris_Christian and welcome to the community!
When did this start happening? Was it after something happened to the phone?
Have you tried several headsets to see if the same thing happens then? I suggest that you start by going to Settings > Apps > ... > Show system > Smart Connect > Storage and press Clear data. Then restart your phone and connect your headset.
If the above didn't help try rebooting your device to safe mode. Should that not help I recommend that you perform a software repair using Xperia Companion.
