I have a droid incredible 4G and a lot of the time when I am entering numbers for an automated answering machine (like entering an account number or something) my phone starts beeping in my ear. When I look at it, it says my original number is on hold and it has started another call with whatever numbers I just entered. It happens even if I only entered a couple numbers. I can still hear my original call but sometimes it mutes me so the other person can't hear me and it always continues to beep in my ear so I miss what the other person is saying. Can I stop it from starting another call or whatever its doing?