My phone has dialed emergency services twice in the last couple of months

Of course the police called me back to ask if I needed assistance and gave me crap for tying up a 911 line but...I never dialed them.  My phone says that I rapidly pressed the side button 5 times but I did not.  Also Siri frequently gets activated for no reason.  I’ve had my phone for 2.5 years and have only started having these issues the last couple of months.