Hello conniemunny,
Welcome to Apple Support Communities!
If we understand your post correctly, calls are getting disconnected and the callers can't hear you. We're here to help!
"If you want to try more steps on your own
If you prefer, here are some more steps you can try on your own. After following these steps, you might still need to contact Apple Support to discuss service options.
- Remove all screen protectors, films, or cases from your device.
- Check the speaker opening to see if it's blocked or dirty. On iPhone only, make sure that the receiver isn't blocked or dirty.
- If necessary, clean the speaker or receiver opening with a small, soft-bristled brush. Make sure that the brush is clean and dry.
- Go to Settings > Sounds (or Settings > Sounds & Haptics), and drag the Ringer and Alerts slider back and forth a few times. If you don't hear any sound, or if your speaker button on the Ringer and Alerts slider is dimmed, your speaker might need service.
- If you hear sound, try making a call with your iPhone and turn on speakerphone. On iPad or iPod touch, make a FaceTime call. If you still can't hear, or hear static or crackling, then your network or reception could be the issue. Try to call again later, or from a different location."
If you hear no sound or distorted sound from your iPhone, iPad, or iPod touch speaker
We also recommend checking out this article for help with the microphone: If the microphones on your iPhone aren't working
Have you reached out to your carrier to see if there is anything going on with their service that might be causing the calls to disconnect?
Thank you for using Apple Support Communities.
Take care!