My Samsung Note 8 is randomly calling people.

Not sure what's going on, I've had the phone for about a month and this problem has popped up within the last couple days and is rapidly getting worse. The phone will randomly redial my last outgoing call. It's done this one time while in my hand (picked up the phone to unlock it only to see the call being connected), a few times in my pocket, and even when it's just laying there by itself with no possible screen contact. Last night my phone called my landlord 3 times and today it dialed another person 8 times. It's getting ridiculous.