Ram Drivers Tried to **** ME

My wife received a parcel today from Ram Couriers drivers, here is my tracking number : MOTD02-***3.When they came started to question my wife where do I work,then she rep**** that its none of their business,well they gave her the parcel later on they came back asking for the parcel infact they were mentioning the contents of parcel which means they opened it before delivering,my wife she told them they must call me and she did not give them the parcel back and they started to threaten her by calling the police and I called Ram customer and I asked if there is anything wrong they said everything in order.So now my question are these not ********s working for Ram,my wife she istraumatized about the incident and Im not around always,now Im concerned about my families safety.So please try to investigate the guys who came,you can check on car tracker if they did not come to the address hours later,Thank you.