Why are phone features opening on its own?

[Sharon Wasny]

Ever since I downloaded the newest lollipop update, whenever I talk on the phone my voicemail will start, or various setting features opens up. Anyone else having this problem and does anyone know how to fix it?

I went to Rogers and they said there is nothing they can do but reset my phone back to factory settings.

This is driving me nuts.
Thanks for any advice.